diff --git a/src/main/java/xuan/controller/UserController.java b/src/main/java/xuan/controller/UserController.java
index 7c58127..f12482e 100644
--- a/src/main/java/xuan/controller/UserController.java
+++ b/src/main/java/xuan/controller/UserController.java
@@ -77,7 +77,6 @@ public class UserController {
             data.put("id", user.getId());
             data.put("userId", user.getUserId());
             data.put("openId", user.getOpenId());
-            data.put("nickname", user.getNickname());
             data.put("avatarUrl", user.getAvatarUrl());
             data.put("username", user.getUsername());
             data.put("phone", user.getPhone());
@@ -139,7 +138,6 @@ public class UserController {
                 data.put("id", user.getId());
                 data.put("userId", user.getUserId());
                 data.put("openId", user.getOpenId());
-                data.put("nickname", user.getNickname());
                 data.put("avatarUrl", user.getAvatarUrl());
                 data.put("username", user.getUsername());
                 data.put("phone", user.getPhone());
diff --git a/src/main/java/xuan/entity/UserInfo.java b/src/main/java/xuan/entity/UserInfo.java
index ffed590..0ae41c4 100644
--- a/src/main/java/xuan/entity/UserInfo.java
+++ b/src/main/java/xuan/entity/UserInfo.java
@@ -14,9 +14,6 @@ public class UserInfo {
     @Column(nullable = false, unique = true, length = 64)
     private String openId;
     
-    @Column(length = 50)
-    private String nickname;
-    
     @Column(length = 255)
     private String avatarUrl;
     
@@ -63,9 +60,6 @@ public class UserInfo {
     public String getOpenId() { return openId; }
     public void setOpenId(String openId) { this.openId = openId; }
     
-    public String getNickname() { return nickname; }
-    public void setNickname(String nickname) { this.nickname = nickname; }
-    
     public String getAvatarUrl() { return avatarUrl; }
     public void setAvatarUrl(String avatarUrl) { this.avatarUrl = avatarUrl; }
     
diff --git a/src/main/java/xuan/service/UserInfoService.java b/src/main/java/xuan/service/UserInfoService.java
index 0b78f50..6dcb1fb 100644
--- a/src/main/java/xuan/service/UserInfoService.java
+++ b/src/main/java/xuan/service/UserInfoService.java
@@ -22,19 +22,18 @@ public class UserInfoService {
     @Autowired
     private CoinConsumeRecordRepository coinConsumeRecordRepository;
     
-    public UserInfo loginOrRegister(String openId, String nickname, String avatarUrl) {
+    public UserInfo loginOrRegister(String openId, String username, String avatarUrl) {
         UserInfo user = userInfoRepository.findByOpenId(openId);
         if (user != null) {
-            user.setNickname(nickname);
+            user.setUsername(username);
             user.setAvatarUrl(avatarUrl);
             return userInfoRepository.save(user);
         }
         
         user = new UserInfo();
         user.setOpenId(openId);
-        user.setNickname(nickname);
+        user.setUsername(username);
         user.setAvatarUrl(avatarUrl);
-        user.setUsername(generateUsername());
         user.setUserId(generateUserId());
         user.setVipLevel(0);
         user.setStreakDays(0);
diff --git a/xuan-deduct-uniapp/src/components/auth-modal/auth-modal.vue b/xuan-deduct-uniapp/src/components/auth-modal/auth-modal.vue
index 6d8bc25..d81f875 100644
--- a/xuan-deduct-uniapp/src/components/auth-modal/auth-modal.vue
+++ b/xuan-deduct-uniapp/src/components/auth-modal/auth-modal.vue
@@ -223,7 +223,7 @@ export default {
           uni.setStorageSync('userInfo', JSON.stringify(res.data))
           uni.setStorageSync('userCoins', res.data.coins || 0)
           uni.setStorageSync('vipLevel', res.data.vipLevel || 0)
-          uni.setStorageSync('username', res.data.nickname || this.nickname)
+          uni.setStorageSync('username', res.data.username || this.nickname)
           uni.setStorageSync('userAvatar', res.data.avatarUrl || this.avatarUrl)
           uni.setStorageSync('isLoggedIn', true)
           
diff --git a/xuan-deduct-uniapp/src/pages/mine/account.vue b/xuan-deduct-uniapp/src/pages/mine/account.vue
index 77b40b3..652824f 100644
--- a/xuan-deduct-uniapp/src/pages/mine/account.vue
+++ b/xuan-deduct-uniapp/src/pages/mine/account.vue
@@ -3,7 +3,7 @@
     <view class="user-info-card">
       <image class="avatar-img" :src="userInfo.avatarUrl || defaultAvatar" mode="aspectFit" />
       <view class="user-detail">
-        <text class="username">{{ userInfo.nickname || userInfo.username || '玄机用户' }}</text>
+        <text class="username">{{ userInfo.username || '玄机用户' }}</text>
         <text class="user-id">ID: {{ userInfo.userId || '100001' }}</text>
       </view>
     </view>
@@ -57,7 +57,6 @@ export default {
         username: '玄机用户',
         avatarUrl: '',
         phone: '',
-        nickname: '',
         vipLevel: 0,
         coins: 0,
         streakDays: 0
@@ -94,7 +93,7 @@ export default {
             
             uni.setStorageSync('userInfo', JSON.stringify(res.data))
             uni.setStorageSync('userAvatar', avatarUrl)
-            uni.setStorageSync('username', this.userInfo.nickname || this.userInfo.username || '玄机用户')
+            uni.setStorageSync('username', this.userInfo.username || '玄机用户')
           } else {
             this.userInfo = localUserInfo
           }
diff --git a/xuan-deduct-uniapp/src/pages/mine/mine.vue b/xuan-deduct-uniapp/src/pages/mine/mine.vue
index 04d86dd..72f7538 100644
--- a/xuan-deduct-uniapp/src/pages/mine/mine.vue
+++ b/xuan-deduct-uniapp/src/pages/mine/mine.vue
@@ -123,7 +123,7 @@ export default {
             const userData = res.data
             this.coins = userData.coins || 0
             this.vipLevel = userData.vipLevel || 0
-            this.username = userData.nickname || userData.username || '玄机用户'
+            this.username = userData.username || '玄机用户'
             
             let avatarUrl = userData.avatarUrl || ''
             if (avatarUrl && !avatarUrl.startsWith('http') && !avatarUrl.startsWith('wxfile://')) {
@@ -208,7 +208,6 @@ export default {
               if (userInfoStr) {
                 const userInfo = JSON.parse(userInfoStr)
                 userInfo.username = res.content
-                userInfo.nickname = res.content
                 uni.setStorageSync('userInfo', JSON.stringify(userInfo))
               }