diff --git a/backend/main.py b/backend/main.py
index 75a85ec..dc21392 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -2099,8 +2099,8 @@ def startup():
             for u in all_users:
                 conn.execute(
                     "INSERT INTO notifications (target_role, title, body, target_user_id) VALUES (?, ?, ?, ?)",
-                    ("viewer", "📢 用户名变更通知",
-                     "系统已取消显示名称，统一使用用户名。你可以在个人设置中修改一次用户名。", u["id"])
+                    ("viewer", "📢 用户名更新提醒",
+                     "为了统一体验，系统已将显示名称合并为用户名。你有一次修改用户名的机会，修改后将不可更改，请慎重选择。", u["id"])
                 )
         conn.commit()
         print(f"[INIT] Synced display_name for {len(needs_sync)} users")
diff --git a/frontend/src/components/UserMenu.vue b/frontend/src/components/UserMenu.vue
index 4436293..ad9d090 100644
--- a/frontend/src/components/UserMenu.vue
+++ b/frontend/src/components/UserMenu.vue
@@ -41,6 +41,8 @@
               <div v-if="!n.is_read" class="notif-actions">
                 <!-- 搜索未收录通知：已添加按钮 -->
                 <button v-if="isSearchMissing(n)" class="notif-action-btn notif-btn-added" @click="markAdded(n)">已添加</button>
+                <!-- 用户名更新通知：去修改按钮 -->
+                <button v-else-if="isUsernameNotice(n)" class="notif-action-btn notif-btn-plan" @click="goRename(n)">去修改</button>
                 <!-- 方案请求通知：去定制按钮 -->
                 <button v-else-if="isPlanRequest(n)" class="notif-action-btn notif-btn-plan" @click="goPlanDesign(n)">去定制</button>
                 <!-- 审核类通知：去审核按钮 -->
@@ -155,6 +157,15 @@ async function changeUsername() {
   }
 }
 
+function isUsernameNotice(n) {
+  return n.title && n.title.includes('用户名更新')
+}
+
+function goRename(n) {
+  markOneRead(n)
+  changeUsername()
+}
+
 function isPlanRequest(n) {
   return n.title && (n.title.includes('方案请求') || n.title.includes('方案需求'))
 }