diff --git a/mobile/src/pages/index/index.vue b/mobile/src/pages/index/index.vue
index 74d8918d..291c979f 100644
--- a/mobile/src/pages/index/index.vue
+++ b/mobile/src/pages/index/index.vue
@@ -12,11 +12,7 @@
             <view class="user-section">
                 <!-- 左侧用户信息 -->
                 <view class="user-info" @click="handleUserClick">
-                    <image
-                        class="user-avatar"
-                        :src="userInfo.avatar || '/static/default-avatar.png'"
-                        mode="aspectFill"
-                    />
+                    <image class="user-avatar" :src="avatarUrl" mode="aspectFill" />
                     <view class="user-details">
                         <text class="user-name">{{ userInfo.name }}</text>
                         <text class="user-dept">{{ userInfo.deptName || '未设置部门' }}</text>
@@ -555,6 +551,21 @@ export default {
         };
     },
     computed: {
+        // 头像URL处理
+        avatarUrl() {
+            console.log(this.userInfo.avatar);
+            console.log(this.userInfo.avatar && this.userInfo.avatar.trim() !== '');
+            console.log(
+                this.userInfo.avatar && this.userInfo.avatar.trim() !== ''
+                    ? this.userInfo.avatar
+                    : '/static/logo-2.png',
+            );
+            // 确保当avatar为空字符串、null或undefined时都显示默认图片
+            return this.userInfo.avatar && this.userInfo.avatar.trim() !== ''
+                ? this.userInfo.avatar
+                : '/static/logo-2.png';
+        },
+
         // 检查各模块是否有权限
         hasStudentServices() {
             return (
diff --git a/mobile/src/utils/user.js b/mobile/src/utils/user.js
index 645d411a..79b05a22 100644
--- a/mobile/src/utils/user.js
+++ b/mobile/src/utils/user.js
@@ -107,7 +107,7 @@ export const userManager = {
 
         return {
             name: this.getDisplayName(),
-            avatar: user.avatar || '/static/default-avatar.png',
+            avatar: user.avatar || '/static/logo-2.png',
             deptName: user.deptName || '未设置部门',
             status: user.status,
             loginDate: user.loginDate,