diff --git a/pages/deepMate/deepMate.vue b/pages/deepMate/deepMate.vue
index 3de84b6..f1e774f 100644
--- a/pages/deepMate/deepMate.vue
+++ b/pages/deepMate/deepMate.vue
@@ -816,7 +816,17 @@ const scrollToBottom = () => {
   });
 };
 const scrollToTop = () => {
-  chatScrollTop.value = 0;
+  // 聊天区存在：控制 scroll-view 回到顶部
+  if (messages.value.length > 0) {
+    chatScrollTop.value = 0;
+    return;
+  }
+  // 未发起对话：页面级滚动回到顶部
+  try {
+    uni.pageScrollTo({ scrollTop: 0, duration: 200 });
+  } catch (e) {
+    // 兜底，无需处理
+  }
 };
 // 自动滚动控制：用户向上滚动时暂停自动滚到底部
 const shouldAutoScroll = ref(true);
@@ -830,6 +840,9 @@ const onChatScroll = (e) => {
   const delta = st - lastScrollTop.value;
   lastScrollTop.value = st;
 
+  // 同步当前滚动位置，确保点击回顶能产生数值变化
+  chatScrollTop.value = st;
+
   if (delta < 0) {
     shouldAutoScroll.value = false;
     return;