diff --git a/src/components/main/components/user/user.vue b/src/components/main/components/user/user.vue
index 292083b..911c1e0 100644
--- a/src/components/main/components/user/user.vue
+++ b/src/components/main/components/user/user.vue
@@ -3,7 +3,7 @@
     <label class="loginName-box">{{userName}}</label>
     <Dropdown>
 
-      <Avatar :src="typeof userAvator === 'string' ? userAvator : userIcon" />
+      <Avatar :src="avatarSrc" />
 
       <Icon :size="18" type="md-arrow-dropdown"></Icon>
       <DropdownMenu slot="list">
@@ -21,7 +21,7 @@
 
 <script>
 import './user.less'
-import { mapMutations, mapActions } from 'vuex'
+import { mapActions } from 'vuex'
 
 const userIcon = require("@/assets/images/administrato.png").default
 
@@ -39,6 +39,23 @@ export default {
       userIcon:  userIcon
     }
   },
+  computed: {
+    /** 接口无头像或空串时用本地默认图，避免 Avatar 空 src 显示灰色块 */
+    avatarSrc() {
+      const v = this.userAvator
+      if (v != null && typeof v === 'string' && v.trim() !== '') {
+        const s = v.trim()
+        if (/^https?:\/\//i.test(s)) {
+          return s
+        }
+        if (this.$http && typeof this.$http.ImgSrc === 'function') {
+          return this.$http.ImgSrc(s)
+        }
+        return s
+      }
+      return this.userIcon
+    },
+  },
   methods: {
     ...mapActions('user', ['handleLogOut']),
     logout() {