diff --git a/project/Projects/Data/ConcreteRepository/Auth/DefaultAuthRepository.swift b/project/Projects/Data/ConcreteRepository/Auth/DefaultAuthRepository.swift
index 1ffb6834..e0440f27 100644
--- a/project/Projects/Data/ConcreteRepository/Auth/DefaultAuthRepository.swift
+++ b/project/Projects/Data/ConcreteRepository/Auth/DefaultAuthRepository.swift
@@ -80,6 +80,12 @@ public extension DefaultAuthRepository {
             .request(api: .requestCenterJoin, with: .withToken)
             .mapToVoid()
     }
+    
+    func setNewPassword(phoneNumber: String, password: String) -> Single<Void> {
+        networkService
+            .request(api: .makeNewPassword(phoneNumber: phoneNumber, newPassword: password), with: .plain)
+            .mapToVoid()
+    }
 }
 
 // MARK: Worker auth
diff --git a/project/Projects/Data/DataSource/API/AuthAPI.swift b/project/Projects/Data/DataSource/API/AuthAPI.swift
index 1ada1c42..c7b16bc7 100644
--- a/project/Projects/Data/DataSource/API/AuthAPI.swift
+++ b/project/Projects/Data/DataSource/API/AuthAPI.swift
@@ -27,6 +27,8 @@ public enum AuthAPI {
     case deregisterCenterAccount(reason: String, password: String)
     case signoutCenterAccount
     
+    case makeNewPassword(phoneNumber: String, newPassword: String)
+    
     // Worker
     case registerWorkerAccount(data: Data)
     case workerLogin(phoneNumber: String, verificationNumber: String)
@@ -69,6 +71,10 @@ extension AuthAPI: BaseAPI {
             return .post
         
             
+        case .makeNewPassword:
+            return .patch
+            
+            
         case .registerWorkerAccount:
             return .post
         case .workerLogin:
@@ -83,17 +89,17 @@ extension AuthAPI: BaseAPI {
     public var path: String {
         switch self {
         case .startPhoneNumberAuth:
-            "common/send"
+            "/common/send"
         case .checkAuthNumber:
-            "common/confirm"
+            "/common/confirm"
         case .reissueToken:
-            "common/refresh"
+            "/common/refresh"
             
             
         case .authenticateBusinessNumber(let businessNumber):
-            "center/authentication/\(businessNumber)"
+            "/center/authentication/\(businessNumber)"
         case .checkIdDuplication(id: let id):
-            "center/validation/\(id)"
+            "/center/validation/\(id)"
             
         case .centerJoinStatus:
             "/center/join/status"
@@ -102,23 +108,26 @@ extension AuthAPI: BaseAPI {
           
           
         case .registerCenterAccount:
-            "center/join"
+            "/center/join"
         case .centerLogin:
-            "center/login"
+            "/center/login"
         case .signoutCenterAccount:
-            "center/logout"
+            "/center/logout"
         case .deregisterCenterAccount:
-            "center/withdraw"
+            "/center/withdraw"
+            
+        case .makeNewPassword:
+            "/center/password/new"
             
             
         case .registerWorkerAccount:
-            "carer/join"
+            "/carer/join"
         case .workerLogin:
-            "carer/login"
+            "/carer/login"
         case .signoutWorkerAccount:
-            "carer/logout"
+            "/carer/logout"
         case .deregisterWorkerAccount:
-            "carer/withdraw"
+            "/carer/withdraw"
         }
     }
     
@@ -136,6 +145,9 @@ extension AuthAPI: BaseAPI {
         case .deregisterCenterAccount(let reason, let password):
             params["reason"] = reason
             params["password"] = password
+        case .makeNewPassword(let phoneNumber, let newPassword):
+            params["phoneNumber"] = phoneNumber
+            params["newPassword"] = newPassword
         case .reissueToken(let refreshToken):
             params["refreshToken"] = refreshToken
         case .workerLogin(let phoneNumber, let verificationNumber):
@@ -172,6 +184,8 @@ extension AuthAPI: BaseAPI {
             return .requestParameters(parameters: bodyParameters ?? [:], encoding: parameterEncoding)
         case .deregisterCenterAccount:
             return .requestParameters(parameters: bodyParameters ?? [:], encoding: parameterEncoding)
+        case .makeNewPassword:
+            return .requestParameters(parameters: bodyParameters ?? [:], encoding: parameterEncoding)
         case .reissueToken:
             return .requestParameters(parameters: bodyParameters ?? [:], encoding: parameterEncoding)
         case .registerWorkerAccount(let data):
diff --git a/project/Projects/Domain/ConcreteUseCase/Auth/DefaultAuthUseCase.swift b/project/Projects/Domain/ConcreteUseCase/Auth/DefaultAuthUseCase.swift
index c09d1710..d3a8f94f 100644
--- a/project/Projects/Domain/ConcreteUseCase/Auth/DefaultAuthUseCase.swift
+++ b/project/Projects/Domain/ConcreteUseCase/Auth/DefaultAuthUseCase.swift
@@ -82,4 +82,8 @@ public class DefaultAuthUseCase: AuthUseCase {
     public func checkCenterJoinStatus() -> Single<Result<CenterJoinStatusInfoVO, DomainError>> {
         convert(task: authRepository.getCenterJoinStatus())
     }
+    
+    public func setNewPassword(phoneNumber: String, password: String) -> Single<Result<Void, DomainError>> {
+        convert(task: authRepository.setNewPassword(phoneNumber: phoneNumber, password: password))
+    }
 }
diff --git a/project/Projects/Domain/RepositoryInterface/Auth/AuthRepository.swift b/project/Projects/Domain/RepositoryInterface/Auth/AuthRepository.swift
index f3297653..cf433a21 100644
--- a/project/Projects/Domain/RepositoryInterface/Auth/AuthRepository.swift
+++ b/project/Projects/Domain/RepositoryInterface/Auth/AuthRepository.swift
@@ -15,8 +15,9 @@ public protocol AuthRepository: RepositoryBase {
     func requestCenterLogin(id: String, password: String) -> Single<Void>
     func signoutCenterAccount() -> Single<Void>
     func deregisterCenterAccount(reasons: [DeregisterReasonVO], password: String) -> Single<Void>
-    func getCenterJoinStatus() -> RxSwift.Single<CenterJoinStatusInfoVO>
-    func requestCenterJoin() -> RxSwift.Single<Void>
+    func getCenterJoinStatus() -> Single<CenterJoinStatusInfoVO>
+    func requestCenterJoin() -> Single<Void>
+    func setNewPassword(phoneNumber: String, password: String) -> Single<Void>
     
     
     // MARK: Worker
diff --git a/project/Projects/Domain/UseCaseInterface/Auth/AuthUseCase.swift b/project/Projects/Domain/UseCaseInterface/Auth/AuthUseCase.swift
index e9bb6ecb..78e31333 100644
--- a/project/Projects/Domain/UseCaseInterface/Auth/AuthUseCase.swift
+++ b/project/Projects/Domain/UseCaseInterface/Auth/AuthUseCase.swift
@@ -9,20 +9,9 @@ import Foundation
 import RxSwift
 import Entity
 
-/// 요구사항
-///     - #1. 센터 회원가입 실행
-///     - #2. 센터 로그인 실행
-///     - #3. 샌터 회원 탈퇴
-///     - #4. 샌터 회원 로그아웃
-///
-///     - #5. 요양보호사 회원가입 실행
-///     - #6. 요양보호사 로그인 실행
-///     - #7. 요양보호사 회원탈퇴 실행
-///     - #8. 요양보호사 로그아웃
-
 public protocol AuthUseCase: UseCaseBase {
     
-    // #1.
+    
     /// 센터 회원가입 실행
     /// - parameters:
     ///     - registerState: CenterRegisterState
@@ -30,7 +19,7 @@ public protocol AuthUseCase: UseCaseBase {
         registerState: CenterRegisterState
     ) -> Single<Result<Void, DomainError>>
     
-    // #2.
+    
     /// 센터 로그인 실행
     /// - parameters:
     ///     - id: String
@@ -40,18 +29,23 @@ public protocol AuthUseCase: UseCaseBase {
         password: String
     ) -> Single<Result<Void, DomainError>>
     
-    // #5
+    /// 센터 인증여부 확인
+    func checkCenterJoinStatus() -> Single<Result<CenterJoinStatusInfoVO, DomainError>>
+    
+    
+    /// 센터 비밀번호 재설정
+    func setNewPassword(phoneNumber: String, password: String) -> Single<Result<Void, DomainError>>
+    
+    
     /// 요양 보호사 회원가입 실행
     func registerWorkerAccount(
         registerState: WorkerRegisterState
     ) -> Single<Result<Void, DomainError>>
-    // #6
+    
+    
     /// 요양 보호사 로그인 실행
     func loginWorkerAccount(
         phoneNumber: String,
         authNumber: String
     ) -> Single<Result<Void, DomainError>>
-    
-    /// 센터 인증여부 확인
-    func checkCenterJoinStatus() -> Single<Result<CenterJoinStatusInfoVO, DomainError>>
 }
diff --git a/project/Projects/Presentation/DSKit/Sources/CommonUI/SnackBar/IdleSnackBar.swift b/project/Projects/Presentation/DSKit/Sources/CommonUI/SnackBar/IdleSnackBar.swift
index 169dc732..e56e81c3 100644
--- a/project/Projects/Presentation/DSKit/Sources/CommonUI/SnackBar/IdleSnackBar.swift
+++ b/project/Projects/Presentation/DSKit/Sources/CommonUI/SnackBar/IdleSnackBar.swift
@@ -70,6 +70,10 @@ public class IdleSnackBar: UIView {
         }
         
         NSLayoutConstraint.activate([
+            
+            titleIcon.widthAnchor.constraint(equalToConstant: 24),
+            titleIcon.heightAnchor.constraint(equalToConstant: 24),
+            
             mainStack.topAnchor.constraint(equalTo: self.layoutMarginsGuide.topAnchor),
             mainStack.leftAnchor.constraint(equalTo: self.layoutMarginsGuide.leftAnchor),
             mainStack.rightAnchor.constraint(equalTo: self.layoutMarginsGuide.rightAnchor),
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/Coordinator/Center/CenterSetNewPasswordCoordinator.swift b/project/Projects/Presentation/Feature/Auth/Sources/Coordinator/Center/CenterSetNewPasswordCoordinator.swift
index 4eafa6b2..42385c06 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/Coordinator/Center/CenterSetNewPasswordCoordinator.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/Coordinator/Center/CenterSetNewPasswordCoordinator.swift
@@ -8,6 +8,8 @@
 import UIKit
 import PresentationCore
 import UseCaseInterface
+import BaseFeature
+import DSKit
 
 enum SetNewPasswordStage: Int {
     
@@ -56,14 +58,16 @@ public class CenterSetNewPasswordCoordinator: ChildCoordinator {
     public func start() {
         
         let vm = CenterSetNewPasswordViewModel(
+            coordinator: self,
             authUseCase: authUseCase,
             inputValidationUseCase: inputValidationUseCase
         )
         
         // stageViewControllerss에 자기자신과 ViewModel할당
+        
         self.stageViewControllers = [
             ValidatePhoneNumberViewController(coordinator: self, viewModel: vm),
-            ValidateNewPasswordViewController(coordinator: self, viewModel: vm)
+            ValidateNewPasswordViewController(viewModel: vm)
         ]
         
         let pageViewController = UIPageViewController(
@@ -74,21 +78,38 @@ public class CenterSetNewPasswordCoordinator: ChildCoordinator {
         
         self.pageViewController = pageViewController
         
-        let viewController = CenterSetNewPasswordController(
+        let vc = CenterSetNewPasswordController(
             pageViewController: pageViewController,
             pageCount: stageViewControllers.count
         )
-        viewController.coordinator = self
+        vc.bind(viewModel: vm)
+        vc.coordinator = self
         
-        navigationController.pushViewController(viewController, animated: true)
+        navigationController.pushViewController(vc, animated: true)
         excuteStage(.phoneNumber, moveTo: .next)
     }
     
     public func coordinatorDidFinish() {
         
         stageViewControllers = []
+        popViewController()
         parent?.removeChildCoordinator(self)
     }
+    
+    public func coordinatorDidFinishWithSnackBar(ro: IdleSnackBarRO) {
+        let belowIndex = navigationController.children.count-2
+        
+        if belowIndex >= 0 {
+            let belowVC = navigationController.children[belowIndex]
+            
+            if let baseVC = belowVC as? BaseViewController {
+                
+                baseVC.viewModel?.addSnackBar(ro: ro)
+            }
+        }
+        
+        coordinatorDidFinish()
+    }
 }
 
 extension CenterSetNewPasswordCoordinator {
@@ -114,7 +135,6 @@ extension CenterSetNewPasswordCoordinator {
         currentStage = stage
         switch stage {
         case .findPasswordFinished, .finish:
-            popViewController()
             coordinatorDidFinish()
         default:
             let vc = stageViewControllers[stage.rawValue-1]
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/Coordinator/Worker/WorkerRegisterCoordinator.swift b/project/Projects/Presentation/Feature/Auth/Sources/Coordinator/Worker/WorkerRegisterCoordinator.swift
index eacd0eeb..3ec1061d 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/Coordinator/Worker/WorkerRegisterCoordinator.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/Coordinator/Worker/WorkerRegisterCoordinator.swift
@@ -38,24 +38,19 @@ public class WorkerRegisterCoordinator: ChildCoordinator {
     public weak var viewControllerRef: UIViewController?
     weak var pageViewController: UIPageViewController?
     
+    
+    let inputValidationUseCase: AuthInputValidationUseCase
+    let authUseCase: AuthUseCase
+    
     // MARK: Stage
     var stageViewControllers: [UIViewController] = []
     private var currentStage: WorkerRegisterStage!
     
     public init(dependency: Dependency) {
     
+        self.inputValidationUseCase = dependency.inputValidationUseCase
+        self.authUseCase = dependency.authUseCase
         self.navigationController = dependency.navigationController
-        
-        let vm = WorkerRegisterViewModel(
-            inputValidationUseCase: dependency.inputValidationUseCase,
-            authUseCase: dependency.authUseCase
-        )
-        
-        self.stageViewControllers = [
-            ValidatePhoneNumberViewController(coordinator: self, viewModel: vm),
-            EntetPersonalInfoViewController(coordinator: self, viewModel: vm),
-            EnterAddressViewController(coordinator: self, viewModel: vm),
-        ]
     }
     
     deinit {
@@ -70,18 +65,30 @@ public class WorkerRegisterCoordinator: ChildCoordinator {
             options: nil
         )
         
+        let vm = WorkerRegisterViewModel(
+            inputValidationUseCase: inputValidationUseCase,
+            authUseCase: authUseCase
+        )
+        
+        self.stageViewControllers = [
+            ValidatePhoneNumberViewController(coordinator: self, viewModel: vm),
+            EntetPersonalInfoViewController(coordinator: self, viewModel: vm),
+            EnterAddressViewController(coordinator: self, viewModel: vm),
+        ]
+        
         self.pageViewController = pageViewController
         
-        let viewController = WorkerRegisterViewController(
+        let vc = WorkerRegisterViewController(
             pageCount: stageViewControllers.count,
             pageViewController: pageViewController
         )
+        vc.bind(viewModel: vm)
         
-        viewController.coordinator = self
+        vc.coordinator = self
         
-        viewControllerRef = viewController
+        viewControllerRef = vc
         
-        navigationController.pushViewController(viewController, animated: true)
+        navigationController.pushViewController(vc, animated: true)
         
         excuteStage(.info, moveTo: .next)
     }
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Login/CenterSetNewPasswordController.swift b/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Login/CenterSetNewPasswordController.swift
index c9451cf7..c4e768fd 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Login/CenterSetNewPasswordController.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Login/CenterSetNewPasswordController.swift
@@ -12,7 +12,7 @@ import RxCocoa
 import PresentationCore
 import BaseFeature
 
-class CenterSetNewPasswordController: DisposableViewController {
+class CenterSetNewPasswordController: BaseViewController {
     
     // Init
     var pageViewController: UIPageViewController
@@ -21,8 +21,6 @@ class CenterSetNewPasswordController: DisposableViewController {
     
     var coordinator: CenterSetNewPasswordCoordinator?
     
-    let disposeBag = DisposeBag()
-    
     public init(pageViewController: UIPageViewController, pageCount: Int) {
         self.pageViewController = pageViewController
         self.pageCount = pageCount
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Login/ValidateNewPasswordViewController.swift b/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Login/ValidateNewPasswordViewController.swift
index 723acd36..31b2957c 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Login/ValidateNewPasswordViewController.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Login/ValidateNewPasswordViewController.swift
@@ -16,15 +16,12 @@ public protocol ChangePasswordSuccessInputable {
     var changePasswordButtonClicked: PublishRelay<Void> { get }
 }
 
-public protocol ChangePasswordSuccessOutputable {
-    var changePasswordValidation: Driver<Bool>? { get set }
-}
 
-class ValidateNewPasswordViewController<T: ViewModelType>: BaseViewController
+class ValidateNewPasswordViewController<T: ViewModelType>: UIViewController
 where T.Input: SetPasswordInputable & ChangePasswordSuccessInputable,
-      T.Output: SetPasswordOutputable & ChangePasswordSuccessOutputable, T: BaseViewModel {
+      T.Output: SetPasswordOutputable {
     
-    var coordinator: Coordinator?
+    let viewModel: T
     
     // View
     private let processTitle: IdleLabel = {
@@ -89,14 +86,12 @@ where T.Input: SetPasswordInputable & ChangePasswordSuccessInputable,
         return button
     }()
     
-    public init(coordinator: Coordinator, viewModel: T) {
-        
-        self.coordinator = coordinator
-        
+    let disposeBag = DisposeBag()
+    
+    public init(viewModel: T) {
+        self.viewModel = viewModel
         super.init(nibName: nil, bundle: nil)
         
-        super.bind(viewModel: viewModel)
-        
         setAppearance()
         setAutoLayout()
         initialUISettuing()
@@ -174,8 +169,6 @@ where T.Input: SetPasswordInputable & ChangePasswordSuccessInputable,
     
     func setObservable() {
         
-        guard let viewModel = self.viewModel as? T else { return }
-        
         // MARK: Input
         let input = viewModel.input
         
@@ -223,22 +216,6 @@ where T.Input: SetPasswordInputable & ChangePasswordSuccessInputable,
                 }
             })
             .disposed(by: disposeBag)
-        
-        output
-            .changePasswordValidation?
-            .drive (onNext: { [weak self] isSuccess in
-                
-                if isSuccess {
-                    // 비밀번호 변경 성공
-                    self?.coordinator?.next()
-                    
-                } else {
-                    // 비밀번호 변경 실패
-                    self?.ctaButton.setEnabled(true)
-                }
-            })
-            .disposed(by: disposeBag)
-    
     }
     
     private func onPasswordMatched() {
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Register/SetIdPasswordViewController.swift b/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Register/SetIdPasswordViewController.swift
index 418dcaab..9db1317e 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Register/SetIdPasswordViewController.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/View/Center/Register/SetIdPasswordViewController.swift
@@ -288,7 +288,17 @@ where T.Input: SetIdInputable & SetPasswordInputable & CTAButtonEnableInputable,
         let idDuplicationValidation = output
             .idDuplicationValidation?
             .map { [weak self] isSuccess in
-                self?.idField.idleTextField.setEnabled(isSuccess)
+                
+                self?.idField.idleTextField.setEnabled(true)
+                
+                if !isSuccess {
+                    self?.idField.idleTextField.textField.textString = ""
+                    self?.showAlert(vo: .init(
+                        title: "사용불가한 아이디",
+                        message: "다른 아이디를 사용해주세요.")
+                    )
+                }
+                
                 return isSuccess
             }
             .asObservable() ?? .empty()
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/View/Common/Register/ValidatePhoneNumberViewController.swift b/project/Projects/Presentation/Feature/Auth/Sources/View/Common/Register/ValidatePhoneNumberViewController.swift
index f88f75ef..cb73b575 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/View/Common/Register/ValidatePhoneNumberViewController.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/View/Common/Register/ValidatePhoneNumberViewController.swift
@@ -32,16 +32,14 @@ public protocol AuthPhoneNumberOutputable {
     // 요양보호사 로그인에 성공한 경우(요양보호사 한정 로직)
     var loginValidation: Driver<Void>? { get set }
 }
-public extension AuthPhoneNumberOutputable {
-    var loginValidation: Driver<Void>? { get { nil } set { } }
-}
 
-class ValidatePhoneNumberViewController<T: ViewModelType>: BaseViewController
+class ValidatePhoneNumberViewController<T: ViewModelType>: UIViewController
 where
     T.Input: AuthPhoneNumberInputable,
-    T.Output: AuthPhoneNumberOutputable, T: BaseViewModel {
+    T.Output: AuthPhoneNumberOutputable {
     
     var coordinator: Coordinator?
+    let viewModel: T
     
     // View
     private let processTitle: ResizableUILabel = {
@@ -114,16 +112,17 @@ where
         return button
     }()
     
+    let disposeBag = DisposeBag()
+        
     public init(
         coordinator: Coordinator? = nil,
         viewModel: T
     ) {
         self.coordinator = coordinator
+        self.viewModel = viewModel
         
         super.init(nibName: nil, bundle: nil)
         
-        super.bind(viewModel: viewModel)
-        
         setAppearance()
         setAutoLayout()
         initialUISettuing()
@@ -203,10 +202,7 @@ where
         ctaButton.setEnabled(false)
     }
     
-    private func setObservable() {
-        
-        guard let viewModel = self.viewModel as? T else { return }
-        
+    public func setObservable() {
         // MARK: Input
         let input = viewModel.input
         
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/View/Worker/WorkerRegisterViewController.swift b/project/Projects/Presentation/Feature/Auth/Sources/View/Worker/WorkerRegisterViewController.swift
index 62ce45ff..745c67c6 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/View/Worker/WorkerRegisterViewController.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/View/Worker/WorkerRegisterViewController.swift
@@ -12,7 +12,7 @@ import RxSwift
 import PresentationCore
 import BaseFeature
 
-class WorkerRegisterViewController: DisposableViewController {
+class WorkerRegisterViewController: BaseViewController {
     
     var coordinator: WorkerRegisterCoordinator?
     
@@ -21,10 +21,8 @@ class WorkerRegisterViewController: DisposableViewController {
     let pageCount: Int
     
     // View
-    let navigationBar: NavigationBarType1 = {
-        let bar = NavigationBarType1(
-            navigationTitle: "요양보호사 회원가입"
-        )
+    let navigationBar: IdleNavigationBar = {
+        let bar = IdleNavigationBar(titleText: "요양보호사 회원가입")
         return bar
     }()
     
@@ -37,8 +35,6 @@ class WorkerRegisterViewController: DisposableViewController {
         return view
     }()
     
-    private let disposeBag = DisposeBag()
-    
     init(
         pageCount: Int,
         pageViewController: UIPageViewController
@@ -76,9 +72,9 @@ class WorkerRegisterViewController: DisposableViewController {
         
         NSLayoutConstraint.activate([
             
-            navigationBar.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 20),
-            navigationBar.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 12),
-            navigationBar.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -12),
+            navigationBar.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
+            navigationBar.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
+            navigationBar.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
             
             statusBar.topAnchor.constraint(equalTo: navigationBar.bottomAnchor, constant: 7),
             statusBar.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 20),
@@ -93,7 +89,7 @@ class WorkerRegisterViewController: DisposableViewController {
     
     func setObservable() {
         navigationBar
-            .eventPublisher
+            .backButton.rx.tap
             .subscribe { [weak self] _ in
                 self?.coordinator?.prev()
             }
@@ -109,7 +105,6 @@ class WorkerRegisterViewController: DisposableViewController {
             .disposed(by: disposeBag)
     }
     
-    
     func cleanUp() {
         
         coordinator?.stageViewControllers = []
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/AuthInOutStreamManager/AuthInOutStreamManager+PhoneNumber.swift b/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/AuthInOutStreamManager/AuthInOutStreamManager+PhoneNumber.swift
index eb40ab57..666cc220 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/AuthInOutStreamManager/AuthInOutStreamManager+PhoneNumber.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/AuthInOutStreamManager/AuthInOutStreamManager+PhoneNumber.swift
@@ -55,6 +55,7 @@ public extension AuthInOutStreamManager {
 #endif
                 return useCase.requestPhoneNumberAuthentication(phoneNumber: formatted)
             }
+            .share()
         
         output
             .phoneNumberValidation = phoneNumberAuthRequestResult
@@ -180,7 +181,9 @@ public extension AuthInOutStreamManager {
             }
         
         failureAlert
-            .subscribe(input.alert)
+            .subscribe(onNext: { [input] alertVO in
+                input.alert.onNext(alertVO)
+            })
             .disposed(by: disposeBag)
     }
 }
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/Login/CenterSetNewPasswordViewModel.swift b/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/Login/CenterSetNewPasswordViewModel.swift
index 60213e6c..5209bbf1 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/Login/CenterSetNewPasswordViewModel.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/Login/CenterSetNewPasswordViewModel.swift
@@ -17,75 +17,94 @@ public class CenterSetNewPasswordViewModel: BaseViewModel, ViewModelType {
     // Init
     let authUseCase: AuthUseCase
     let inputValidationUseCase: AuthInputValidationUseCase
+    weak var coordinator: CenterSetNewPasswordCoordinator?
     
     public var input: Input = .init()
     public var output: Output = .init()
     
     // State
     private var validPassword: String?
+    private var authenticatedPhoneNumebr: String?
     
     public init(
+        coordinator: CenterSetNewPasswordCoordinator,
         authUseCase: AuthUseCase,
         inputValidationUseCase: AuthInputValidationUseCase) {
-        self.authUseCase = authUseCase
-        self.inputValidationUseCase = inputValidationUseCase
+            self.coordinator = coordinator
+            self.authUseCase = authUseCase
+            self.inputValidationUseCase = inputValidationUseCase
             
             super.init()
             
-        setObservable()
-    }
-    
-    deinit {
-        printIfDebug("deinit \(Self.self)")
-    }
-    
-    func setObservable() {
-        
-        // 비밀번호
-        AuthInOutStreamManager.passwordInOut(
-            input: input,
-            output: output,
-            useCase: inputValidationUseCase) { [weak self] validPassword in
-                // 🚀 상태추적 🚀
-                self?.validPassword = validPassword
-            }
-        
-        // 휴대전화 인증
-        AuthInOutStreamManager.validatePhoneNumberInOut(
+            // 비밀번호
+            AuthInOutStreamManager.passwordInOut(
+                input: input,
+                output: output,
+                useCase: inputValidationUseCase) { [weak self] validPassword in
+                    // 🚀 상태추적 🚀
+                    self?.validPassword = validPassword
+                }
+            
+            // 휴대전화 인증
+            AuthInOutStreamManager.validatePhoneNumberInOut(
                 input: input,
                 output: output,
                 useCase: inputValidationUseCase,
-                disposeBag: disposeBag
-        ) { _ in }
-        
-        changePasswordInOut()
-    }
-    
-    private func changePasswordInOut() {
-        
-        let changePasswordResult = input.changePasswordButtonClicked
-            .flatMap { [weak self] _ in
-                
-                printIfDebug("변경 요청 비밀번호 \(self?.validPassword ?? "")")
-                
-                // TODO: 비밀번호 변경 API 연동
-                // 이벤트 전송
-                return Single.just(Result<Void, HTTPResponseException>.success(()))
-            }
-            .share()
-        
-        output.changePasswordValidation = changePasswordResult
-            .map { result in
-                switch result {
-                case .success:
-                    printIfDebug("비밀번호 변경 성공")
-                    return true
-                case .failure(let error):
-                    printIfDebug("비밀번호 변경 실패")
-                    return false
+                disposeBag: disposeBag) { [weak self] phoneNumber in
+                    // 🚀 상태추적 🚀
+                    self?.authenticatedPhoneNumebr = phoneNumber
+                }
+            
+            let changePasswordResult = input.changePasswordButtonClicked
+                .compactMap({ [weak self] _ -> (String, String)? in
+                    
+                    guard let phoneNumber = self?.authenticatedPhoneNumebr, let validPassword = self?.validPassword else {
+                        return nil
+                    }
+                    
+                    return (phoneNumber, validPassword)
+                })
+                .flatMap { [authUseCase] (phoneNumber, validPassword) in
+                    
+                    authUseCase
+                        .setNewPassword(phoneNumber: phoneNumber, password: validPassword)
                 }
-            }
-            .asDriver(onErrorJustReturn: false)
+                .share()
+                
+            changePasswordResult
+                .subscribe(onNext: {
+                    [weak self] result in
+                    
+                    guard let self else { return }
+                    
+                    switch result {
+                    case .success:
+                        self.coordinator?
+                            .coordinatorDidFinishWithSnackBar(
+                                ro: .init(
+                                    titleText: "비밀번호 변경 성공"
+                                )
+                            )
+                    case .failure(let error):
+                        self.alert.onNext(
+                            .init(
+                                title: "비밀번호 변경 실패",
+                                message: error.message
+                            )
+                        )
+                    }
+                })
+                .disposed(by: disposeBag)
+            
+            input.alert
+                .subscribe(onNext: { [weak self] alertVO in
+                    self?.alert.onNext(alertVO)
+                })
+                .disposed(by: disposeBag)
+        }
+    
+    deinit {
+        printIfDebug("deinit \(Self.self)")
     }
 }
 
@@ -120,8 +139,7 @@ public extension CenterSetNewPasswordViewModel {
         // Password
         public var passwordValidation: Driver<PasswordValidationState>?
         
-        // Change password
-        public var changePasswordValidation: Driver<Bool>?
+        public var loginValidation: Driver<Void>?
     }
 }
 
@@ -133,4 +151,3 @@ extension CenterSetNewPasswordViewModel.Input: SetPasswordInputable { }
 extension CenterSetNewPasswordViewModel.Output: SetPasswordOutputable { }
 
 extension CenterSetNewPasswordViewModel.Input: ChangePasswordSuccessInputable { }
-extension CenterSetNewPasswordViewModel.Output: ChangePasswordSuccessOutputable { }
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/Register/CenterRegisterViewModel.swift b/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/Register/CenterRegisterViewModel.swift
index 2cd49294..1ec0e451 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/Register/CenterRegisterViewModel.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Center/Register/CenterRegisterViewModel.swift
@@ -70,6 +70,10 @@ public class CenterRegisterViewModel: BaseViewModel, ViewModelType {
                     // 🚀 상태추적 🚀
                     self?.stateObject.password = validPassword
                 }
+            
+            input.alert
+                .bind(to: self.alert)
+                .disposed(by: disposeBag)
         }
     
     deinit {
@@ -134,6 +138,7 @@ extension CenterRegisterViewModel {
         
         // Register success
         public var registerValidation: Driver<Void>?
+        public var loginValidation: Driver<Void>?
     }
 }
 
diff --git a/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Worker/Register/WorkerRegisterViewModel.swift b/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Worker/Register/WorkerRegisterViewModel.swift
index a13f16f8..f2fcac44 100644
--- a/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Worker/Register/WorkerRegisterViewModel.swift
+++ b/project/Projects/Presentation/Feature/Auth/Sources/ViewModel/Worker/Register/WorkerRegisterViewModel.swift
@@ -92,34 +92,22 @@ public class WorkerRegisterViewModel: BaseViewModel, ViewModelType {
             })
             .disposed(by: disposeBag)
         
-        registerInOut()
-    }
-    
-    private func validateBirthYear(_ year: Int) -> Bool {
-        let currentYear: Int = Calendar.current.component(.year, from: Date())
-        return (1900..<currentYear).contains(year)
-    }
-    
-    private func registerInOut() {
         
-        let registerValidation = input
-            .ctaButtonClicked
-            .compactMap { $0 }
+        // MARK: 회원가입 최종 등록
+        let registerValidation = input.ctaButtonClicked.compactMap { $0 }
             .flatMap { [authUseCase, stateObject] _ in
                 authUseCase.registerWorkerAccount(registerState: stateObject)
             }
             .share()
         
-        output.registerValidation = registerValidation
-            .compactMap { $0.value }
+        output.registerValidation = registerValidation.compactMap { $0.value }
             .map {
                 print("✅ 회원가입 성공")
                 return ()
             }
             .asDriver(onErrorJustReturn: ())
         
-        let failureAlert = registerValidation
-            .compactMap { $0.error }
+        let registerFailureAlert = registerValidation.compactMap { $0.error }
             .map { error in
                 print("❌ 회원가입 실패 \n 에러내용: \(error.message)")
                 return DefaultAlertContentVO(
@@ -128,10 +116,22 @@ public class WorkerRegisterViewModel: BaseViewModel, ViewModelType {
                 )
             }
         
-        failureAlert
-            .subscribe(self.alert)
+        Observable
+            .merge(
+                input.alert,
+                registerFailureAlert
+            )
+            .subscribe(onNext: { [weak self] alertVO in
+                
+                self?.alert.onNext(alertVO)
+            })
             .disposed(by: disposeBag)
     }
+    
+    private func validateBirthYear(_ year: Int) -> Bool {
+        let currentYear: Int = Calendar.current.component(.year, from: Date())
+        return (1900..<currentYear).contains(year)
+    }
 }
 
 extension WorkerRegisterViewModel {
diff --git a/project/Projects/Presentation/Feature/Base/Sources/View/ViewController/Base/BaseViewController.swift b/project/Projects/Presentation/Feature/Base/Sources/View/ViewController/Base/BaseViewController.swift
index d4ae4a2f..da7d3c69 100644
--- a/project/Projects/Presentation/Feature/Base/Sources/View/ViewController/Base/BaseViewController.swift
+++ b/project/Projects/Presentation/Feature/Base/Sources/View/ViewController/Base/BaseViewController.swift
@@ -149,7 +149,7 @@ extension BaseViewController {
         
         // 스낵바를 하단에 감춘다
         snackBar.transform = .init(translationX: 0, y: snackBarHeight+horizontalPadding)
-        snackBar.alpha = 0.5
+        snackBar.alpha = 0.25
         
         // 뷰계층에 추가
         view.addSubview(snackBar)
@@ -163,7 +163,9 @@ extension BaseViewController {
             
             UIView.animate(withDuration: 0.2, delay: snackBarShowingDuration, options: .curveEaseIn) {
                 snackBar.transform = .init(translationX: 0, y: snackBarHeight+horizontalPadding)
-                snackBar.alpha = 0.5
+                snackBar.alpha = 0.25
+            } completion: { _ in
+                snackBar.removeFromSuperview()
             }
         }
     }
diff --git a/project/Projects/Presentation/Feature/Center/Sources/ViewModel/RegisterCenterInfo/RegisterCenterInfoVM.swift b/project/Projects/Presentation/Feature/Center/Sources/ViewModel/RegisterCenterInfo/RegisterCenterInfoVM.swift
index bd56d343..6a5db52c 100644
--- a/project/Projects/Presentation/Feature/Center/Sources/ViewModel/RegisterCenterInfo/RegisterCenterInfoVM.swift
+++ b/project/Projects/Presentation/Feature/Center/Sources/ViewModel/RegisterCenterInfo/RegisterCenterInfoVM.swift
@@ -122,7 +122,7 @@ public class RegisterCenterInfoVM: BaseViewModel, RegisterCenterInfoViewModelabl
                 guard let self else { return }
                 
                 // 프리뷰화면으로 이동
-                coordinator.showPreviewScreen(stateObject: stateObject)
+                self.coordinator?.showPreviewScreen(stateObject: stateObject)
             })
             .disposed(by: disposeBag)
         
diff --git a/project/Projects/Presentation/Feature/Root/Sources/Screen/Common/InitialScreen/InitialScreenVM.swift b/project/Projects/Presentation/Feature/Root/Sources/Screen/Common/InitialScreen/InitialScreenVM.swift
index 432716b9..3daad6b3 100644
--- a/project/Projects/Presentation/Feature/Root/Sources/Screen/Common/InitialScreen/InitialScreenVM.swift
+++ b/project/Projects/Presentation/Feature/Root/Sources/Screen/Common/InitialScreen/InitialScreenVM.swift
@@ -171,6 +171,9 @@ public class InitialScreenVM: BaseViewModel {
                 case .approved:
                     return info
                 case .pending, .new:
+                    
+                    self.coordinator?.centerAuth()
+                    
                     return nil
                 }
             }
diff --git a/project/Projects/Presentation/Feature/Root/Sources/Screen/Worker/PhoneNumberValidationForDeregisterVM.swift b/project/Projects/Presentation/Feature/Root/Sources/Screen/Worker/PhoneNumberValidationForDeregisterVM.swift
index 0895a291..f82d6e46 100644
--- a/project/Projects/Presentation/Feature/Root/Sources/Screen/Worker/PhoneNumberValidationForDeregisterVM.swift
+++ b/project/Projects/Presentation/Feature/Root/Sources/Screen/Worker/PhoneNumberValidationForDeregisterVM.swift
@@ -41,6 +41,7 @@ class PhoneNumberValidationForDeregisterVM: BaseViewModel, PhoneNumberValidation
     var canSubmitAuthNumber: RxCocoa.Driver<Bool>?
     var phoneNumberValidation: RxCocoa.Driver<Bool>?
     var authNumberValidation: RxCocoa.Driver<Bool>?
+    var loginValidation: RxCocoa.Driver<Void>?
     
     init(
             coordinator: PhoneNumberValidationForDeregisterCoordinator?,