diff --git a/docs/uaw.md b/docs/uaw.md
index 6d2f571..997154a 100644
--- a/docs/uaw.md
+++ b/docs/uaw.md
@@ -255,9 +255,10 @@ body:
 
 #### Response
 
-> 只要不返回errcode, 即表示上传成功
-```json
-{} 
+```js
+{
+  "score": 10 // 获得的积分
+} 
 ```
 
 ### 9.  积分排行榜
diff --git a/src/controllers/activity.controller.ts b/src/controllers/activity.controller.ts
index b070fc0..cbb5aae 100644
--- a/src/controllers/activity.controller.ts
+++ b/src/controllers/activity.controller.ts
@@ -35,10 +35,14 @@ export default class ActivityController extends BaseController {
     let { code } = req.params
     let user = req.user
     if (user.inviteUser) {
-      throw new ZError(11, 'already set invite user')
+      throw new ZError(11, 'invite user already set')
     }
     if (!user.allTaskFinished()) {
-      throw new ZError(12, 'not all task finished')
+      throw new ZError(12, 'not all tasks finished')
+    }
+    // In production, users cannot invite themselves
+    if (process.env.NODE_ENV === 'production' && code === user.inviteCode) {
+      throw new ZError(13, 'cannot invite yourself')
     }
     let inviteUser = await ActivityUser.findByCode(code, user.activity)
     if (!inviteUser) {
@@ -69,7 +73,7 @@ export default class ActivityController extends BaseController {
     })
     user.inviteUser = inviteUser.id
     await user.save()
-    return {}
+    return { score: shareCfg.invitee }
   }
 
   /**