diff --git a/pages/chat-detail/index.js b/pages/chat-detail/index.js
index 3ddf3b5..05924de 100644
--- a/pages/chat-detail/index.js
+++ b/pages/chat-detail/index.js
@@ -190,17 +190,67 @@ Page({
     this.setData({
       messages: newMessages
     }, () => {
-      // 检查是否需要滚动到底部
-      if (this.data.isAtBottom) {
-        this.scrollToBottom(true);
-      } else {
-        // 显示新消息提示
-        this.setData({
-          hasNewMessages: true,
-          newMessageCount: this.data.newMessageCount + 1
-        });
+      // 检查页面是否已卸载
+      if (this.isUnloaded) {
+        console.log('页面已卸载，忽略滚动和新消息检测');
+        return;
       }
       
+      // 重新计算是否在底部
+      wx.createSelectorQuery().in(this)
+        .select('#chatScrollView')
+        .boundingClientRect()
+        .exec((rects) => {
+          if (rects && rects[0]) {
+            const scrollViewRect = rects[0];
+            
+            // 获取scroll-view的滚动信息
+            wx.createSelectorQuery().in(this)
+              .select('#chatScrollView')
+              .scrollOffset()
+              .exec((scrollOffsets) => {
+                if (scrollOffsets && scrollOffsets[0]) {
+                  const { scrollTop } = scrollOffsets[0];
+                  
+                  // 计算滚动内容的总高度
+                  wx.createSelectorQuery().in(this)
+                    .select('.chat-messages')
+                    .boundingClientRect()
+                    .exec((messageRects) => {
+                      if (messageRects && messageRects[0]) {
+                        const messagesHeight = messageRects[0].height;
+                        const clientHeight = scrollViewRect.height;
+                        
+                        // 计算滚动位置与底部的距离
+                        const distanceToBottom = messagesHeight - scrollTop - clientHeight;
+                        // 当距离底部小于100rpx（约50px）时，视为在底部
+                        const isActuallyAtBottom = distanceToBottom < 50;
+                        
+                        console.log('接收消息时的滚动检测:', { 
+                          scrollTop, 
+                          messagesHeight, 
+                          clientHeight, 
+                          distanceToBottom, 
+                          isActuallyAtBottom 
+                        });
+                        
+                        // 如果在底部，自动滚动到最新消息
+                        if (isActuallyAtBottom) {
+                          this.scrollToBottom(true);
+                        } else {
+                          // 否则显示新消息提示
+                          this.setData({
+                            hasNewMessages: true,
+                            newMessageCount: this.data.newMessageCount + 1
+                          });
+                        }
+                      }
+                    });
+                }
+              });
+          }
+        });
+      
       // 短暂延迟后移除isNew标记
       setTimeout(() => {
         if (this.isUnloaded) return;