diff --git a/pages/blank/institutionalTrendsBriefing.vue b/pages/blank/institutionalTrendsBriefing.vue
index ca1133c..13cae23 100644
--- a/pages/blank/institutionalTrendsBriefing.vue
+++ b/pages/blank/institutionalTrendsBriefing.vue
@@ -24,9 +24,7 @@
 <script setup>
 // 返回到 deepMate 页面
 const goBack = () => {
-  uni.navigateTo({
-    url: '/pages/deepMate/deepMate'
-  });
+ uni.navigateBack({ delta: 1 })
 };
 </script>
 
diff --git a/pages/blank/notice.vue b/pages/blank/notice.vue
index f64f90d..b273154 100644
--- a/pages/blank/notice.vue
+++ b/pages/blank/notice.vue
@@ -24,9 +24,8 @@
 <script setup>
 // 返回到 deepMate 页面
 const goBack = () => {
-  uni.navigateTo({
-    url: '/pages/deepMate/deepMate'
-  });
+  // 返回上一页，避免新开页面造成堆叠
+  uni.navigateBack({ delta: 1 })
 };
 </script>
 
diff --git a/pages/deepMate/deepMate.vue b/pages/deepMate/deepMate.vue
index 1a4ddbd..c404bb1 100644
--- a/pages/deepMate/deepMate.vue
+++ b/pages/deepMate/deepMate.vue
@@ -249,7 +249,7 @@
           <view class="delete-all-container">
             <image
               class="delete-icon"
-              src="/static/icons/Group_48095481.svg"
+              src="/static/icons/Group_48095481.svg" @click="clearAllHistory"
             ></image>
             <text class="delete-all" @click="clearAllHistory">删除全部</text>
           </view>
@@ -595,8 +595,21 @@ const groupedHistory = computed(() => {
 });
 
 const clearAllHistory = () => {
-  searchHistory.value = [];
-  // uni.setStorageSync("search_history", []);
+  uni.showModal({
+    title: '确认删除',
+    content: '确定要删除全部历史记录吗？该操作不可撤销。',
+    confirmText: '删除',
+    cancelText: '取消',
+    success: (res) => {
+      if (res.confirm) {
+        // 当前历史面板依赖 historyList，而非 searchHistory
+        historyList.value = [];
+        // 同步清空本地旧缓存（如果曾使用）
+        // uni.setStorageSync("search_history", []);
+        uni.showToast({ title: '历史已清空', icon: 'none' });
+      }
+    }
+  })
 };
 
 // 发送消息
@@ -669,7 +682,7 @@ const simulateBotResponse = async (userMessage) => {
 
     // 更新机器人的消息内容
     const errorMessage = res.message || "请求失败，请稍后重试";
-    let responseText = `我已经收到您的消息: "${userMessage}"。错误信息: "${errorMessage}"`;
+    let responseText = `我已经收到您的消息: "${userMessage}"。"${errorMessage}"`;
 
     // 开始打字机效果显示错误信息
     let index = 0;
@@ -1190,7 +1203,7 @@ async function itemClick(item) {
 
 .welcome-section {
   /* 灰色卡片（recommend-card）之后展示背景图 */
-  margin-top: 10rpx;
+  margin-top: 2rem;
   display: flex;
   align-items: center;
   justify-content: center;