diff --git a/.gitignore b/.gitignore
index e69de29..723ef36 100644
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1 @@
+.idea
\ No newline at end of file
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..b58b603
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,5 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/.idea/miniprogram-api-promise.iml b/.idea/miniprogram-api-promise.iml
new file mode 100644
index 0000000..0c8867d
--- /dev/null
+++ b/.idea/miniprogram-api-promise.iml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/temp" />
+      <excludeFolder url="file://$MODULE_DIR$/.tmp" />
+      <excludeFolder url="file://$MODULE_DIR$/tmp" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..65fa027
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/miniprogram-api-promise.iml" filepath="$PROJECT_DIR$/.idea/miniprogram-api-promise.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/README.md b/README.md
index 35756cc..ccb1860 100644
--- a/README.md
+++ b/README.md
@@ -1,33 +1,53 @@
-# miniprogram-api-promise
+# miniprogram-api-promise-error-first
 
-[![](https://img.shields.io/npm/v/miniprogram-api-promise.svg?style=flat)](https://www.npmjs.com/package/miniprogram-api-promise)
-[![](https://img.shields.io/github/license/wechat-miniprogram/api-typings.svg)](https://github.com/wechat-miniprogram/miniprogram-api-promise)
+[![](https://img.shields.io/npm/v/miniprogram-api-promise-error-first)](https://www.npmjs.com/package/miniprogram-api-promise-error-first)
 
 Extend WeChat miniprogram's api to surport promise.
 
 # Installation
 
 ```
-npm install --save miniprogram-api-promise
+npm install --save miniprogram-api-promise-error-first
 ```
 
 # Getting started
 Call the method promisifyAll at the program entry (app.js), It only needs to be called once.
 
 💨example:
-```
-import { promisifyAll, promisify } from 'miniprogram-api-promise';
+```js
+import { promisifyAll, promisify } from 'miniprogram-api-promise-error-first';
 
 const wxp = {}
 // promisify all wx's api
 promisifyAll(wx, wxp)
 console.log(wxp.getSystemInfoSync())
-wxp.getSystemInfo().then(console.log)
-wxp.showModal().then(wxp.openSetting())
+
+(async () => {
+    const [err, systemInfo] = await wxp.getSystemInfo()
+    if (err) {
+        console.error(err)
+        return
+    }
+    console.log(systemInfo)
+});
+
+
+(async () => {
+    const [err] = await wxp.showModal()
+    if (err) {
+        console.error(err)
+        return
+    }
+    
+    wxp.openSetting()
+});
 
 // compatible usage
 wxp.getSystemInfo({success(res) {console.log(res)}})
 
-// promisify single api
-promisify(wx.getSystemInfo)().then(console.log)
+(async () => {
+    // promisify single api
+    const [err, res] = await promisify(wx.getSystemInfo)()
+});
+
 ```
diff --git a/examples/index/index.js b/examples/index/index.js
index 103ddb7..a93e2cd 100644
--- a/examples/index/index.js
+++ b/examples/index/index.js
@@ -12,16 +12,18 @@ Page({
     promisifyAll(wx, wxp)
     promisify(wx.getSystemInfo)().then(console.log)
   },
-  tap() {
-    wxp.showModal({
+  async tap() {
+    const [err, res] = await wxp.showModal({
       title: '打开 Setting'
-    }).then(() => {
-      wxp.openSetting()
     })
 
-    wxp.getSystemInfo().then(res => {
-      console.log('Async: getSystemInfo ', res)
-    })
+    console.log('showModal', err, res)
+
+    wxp.openSetting()
+
+    const [sysErr, sysInfo] = await wxp.getSystemInfo()
+    console.log('Async: getSystemInfo ', sysInfo)
+
     console.log('Sycn getSystemInfoSync', wxp.getSystemInfoSync())
     console.log('wx.env', wxp.env)
     wxp.getSystemInfo({
diff --git a/package.json b/package.json
index ec022d4..1810e79 100644
--- a/package.json
+++ b/package.json
@@ -1,24 +1,24 @@
 {
-  "name": "miniprogram-api-promise",
-  "version": "1.0.4",
-  "description": "Extend WeChat miniprogram's api to surport promise",
+  "name": "miniprogram-api-promise-error-first",
+  "version": "1.0.0",
+  "description": "Extend WeChat miniprogram's api to surport error-first pattern promise",
   "main": "src/index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/wechat-miniprogram-admin/miniprogram-api-promise.git"
+    "url": "git+https://github.com/lh4111/miniprogram-api-promise.git"
   },
   "keywords": [
     "miniprogram",
     "api",
     "promise"
   ],
-  "author": "sanfordsun",
+  "author": "lihao",
   "license": "ISC",
   "bugs": {
-    "url": "https://github.com/wechat-miniprogram-admin/miniprogram-api-promise/issues"
+    "url": "https://github.com/lh4111/miniprogram-api-promise/issues"
   },
-  "homepage": "https://github.com/wechat-miniprogram-admin/miniprogram-api-promise#readme"
+  "homepage": "https://github.com/lh4111/miniprogram-api-promise#readme"
 }
diff --git a/src/promise.js b/src/promise.js
index aa1e1c9..0daab49 100644
--- a/src/promise.js
+++ b/src/promise.js
@@ -13,11 +13,15 @@ function hasCallback(args) {
 function _promisify(func) {
   if (typeof func !== 'function') return fn
   return (args = {}) =>
-    new Promise((resolve, reject) => {
+    new Promise(resolve => {
       func(
         Object.assign(args, {
-          success: resolve,
-          fail: reject
+          success: res => {
+            resolve([null, res])
+          },
+          fail: err => {
+            resolve([err, null])
+          }
         })
       )
     })