diff --git a/backend/mainServer/src/host/host.controller.spec.ts b/backend/mainServer/src/host/host.controller.spec.ts
index 153e0d47..09824c99 100644
--- a/backend/mainServer/src/host/host.controller.spec.ts
+++ b/backend/mainServer/src/host/host.controller.spec.ts
@@ -31,7 +31,7 @@ describe('HostController', () => {
 
     const req = {
       headers: {
-        url: 'http://example.com',
+        host: 'http://example.com',
         'content-type': 'application/json',
       },
       body: {
@@ -49,4 +49,50 @@ describe('HostController', () => {
     expect(res.status).toHaveBeenCalledWith(HttpStatus.OK);
     expect(res.json).toHaveBeenCalledWith({ 'host-data': mockHostData });
   });
+
+  it('should return 400 for invalid request with missing uuid', async () => {
+    jest.spyOn(service, 'generateStreamKey').mockResolvedValue(undefined);
+
+    const req = {
+      headers: {
+        host: 'http://example.com',
+        'content-type': 'application/json',
+      },
+      body: {
+        // uuid가 없는 비정상적인 요청
+      },
+    } as any;
+
+    const res = {
+      status: jest.fn().mockReturnThis(),
+      json: jest.fn(),
+    } as any;
+
+    await controller.generateStreamKey(req, res);
+
+    expect(res.status).toHaveBeenCalledWith(HttpStatus.BAD_REQUEST);
+  });
+
+  it('should return 400 for invalid request with incorrect content-type', async () => {
+    jest.spyOn(service, 'generateStreamKey').mockResolvedValue(undefined);
+
+    const req = {
+      headers: {
+        host: 'http://example.com',
+        'content-type': 'text/plain',
+      },
+      body: {
+        uuid: 'test-uuid',
+      },
+    } as any;
+
+    const res = {
+      status: jest.fn().mockReturnThis(),
+      json: jest.fn(),
+    } as any;
+
+    await controller.generateStreamKey(req, res);
+
+    expect(res.status).toHaveBeenCalledWith(HttpStatus.BAD_REQUEST);
+  });
 });
diff --git a/backend/mainServer/src/host/host.controller.ts b/backend/mainServer/src/host/host.controller.ts
index e513d0ae..5f2ba681 100644
--- a/backend/mainServer/src/host/host.controller.ts
+++ b/backend/mainServer/src/host/host.controller.ts
@@ -14,17 +14,26 @@ export class HostController {
       const contentType = req.headers['content-type'];
       const { uuid } = req.body;
 
-      if (!host || !contentType || contentType !== 'application/json' || !uuid) {
+      if (!host || !contentType || !uuid) {
         throw new HttpException('Bad Request', HttpStatus.BAD_REQUEST);
       }
+      if (contentType !== 'application/json') {
+        throw new HttpException("Content-Type must be application/json", HttpStatus.BAD_REQUEST)
+      }
 
       const hostData = await this.hostService.generateStreamKey(uuid);
       res.status(HttpStatus.OK).json({ 'host-data': hostData });
     } catch (error) {
-      res.status(HttpStatus.SERVICE_UNAVAILABLE).json({
-        statusCode: 503,
-        message: 'Server logic error',
-      });
+      if (error.status === 400) {
+        res.status(HttpStatus.BAD_REQUEST).json({
+          error: error.response
+        })
+      }
+      else {
+        res.status(HttpStatus.INTERNAL_SERVER_ERROR).json({
+          error: 'Server logic error',
+        });
+      }
     }
   }
 }
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