diff --git a/CloudSync/cloudsync/ui/sync_tab.py b/CloudSync/cloudsync/ui/sync_tab.py
index 0e0a4fd..a5e53e3 100644
--- a/CloudSync/cloudsync/ui/sync_tab.py
+++ b/CloudSync/cloudsync/ui/sync_tab.py
@@ -276,9 +276,12 @@ class SyncTab:
                 self.current_folder_var.set(folder_path)
                 self.remote_dir_var.set(remote_path)
 
-                # 刷新文件预览
+                # 刷新本地文件预览
                 self._refresh_local_tree(folder_path)
 
+                # 刷新远程文件预览
+                self._refresh_remote_tree(remote_path)
+
                 # 更新访问记录
                 self.folder_manager.update_folder_access(folder_path)
 
@@ -385,6 +388,91 @@ class SyncTab:
         except Exception as e:
             self.logger.error(f"Error refreshing local tree: {e}")
 
+    def _refresh_remote_tree(self, remote_path=None):
+        """刷新远程文件树"""
+        if remote_path is None:
+            remote_path = self.remote_dir_var.get()
+
+        if not remote_path:
+            return
+
+        # 清空现有项目
+        self.remote_tree.delete(*self.remote_tree.get_children())
+
+        # 显示加载提示
+        self.log_queue.put(f"🔄 正在加载远程文件: {remote_path}")
+
+        def load_worker():
+            try:
+                # 获取所有可用的云盘服务
+                all_files = {}
+
+                for cloud in self.clouds:
+                    try:
+                        self.log_queue.put(f"  正在从 {cloud.name} 获取文件列表...")
+                        files = cloud.list_files(remote_path)
+
+                        if files:
+                            all_files[cloud.name] = files
+                            self.log_queue.put(f"  ✅ {cloud.name}: 找到 {len(files)} 个文件")
+                        else:
+                            self.log_queue.put(f"  ℹ️ {cloud.name}: 目录为空或不存在")
+
+                    except Exception as e:
+                        self.logger.error(f"Failed to list files from {cloud.name}: {e}")
+                        self.log_queue.put(f"  ❌ {cloud.name}: 获取失败 - {str(e)[:50]}")
+
+                # 在UI线程中更新树形视图
+                def update_tree():
+                    if not all_files:
+                        # 显示"无文件"提示
+                        self.remote_tree.insert("", "end", text="📭 远程目录为空或不存在")
+                        return
+
+                    # 为每个云盘创建一个分类节点
+                    for cloud_name, files in all_files.items():
+                        cloud_node = self.remote_tree.insert("", "end", text=f"☁️ {cloud_name}", open=True)
+
+                        # 解析文件列表并添加到树中
+                        for file_info in files:
+                            # bypy的输出格式可能是 "D 文件夹名" 或 "F 文件名 (大小)"
+                            file_info = file_info.strip()
+
+                            if not file_info:
+                                continue
+
+                            # 尝试解析文件类型和名称
+                            if file_info.startswith('D '):
+                                # 目录
+                                name = file_info[2:].strip()
+                                self.remote_tree.insert(cloud_node, "end", text=f"📁 {name}")
+                            elif file_info.startswith('F '):
+                                # 文件
+                                parts = file_info[2:].split('(')
+                                name = parts[0].strip()
+                                size = parts[1].rstrip(')').strip() if len(parts) > 1 else ""
+                                display_text = f"📄 {name}" + (f" ({size})" if size else "")
+                                self.remote_tree.insert(cloud_node, "end", text=display_text)
+                            else:
+                                # 未知格式，直接显示
+                                self.remote_tree.insert(cloud_node, "end", text=f"📄 {file_info}")
+
+                    self.log_queue.put("✅ 远程文件列表加载完成")
+
+                self.frame.after(0, update_tree)
+
+            except Exception as e:
+                self.logger.error(f"Error loading remote files: {e}")
+                self.log_queue.put(f"❌ 加载远程文件失败: {e}")
+
+                def show_error():
+                    self.remote_tree.insert("", "end", text=f"❌ 加载失败: {str(e)[:50]}")
+
+                self.frame.after(0, show_error)
+
+        # 在后台线程中加载
+        threading.Thread(target=load_worker, daemon=True).start()
+
     def _browse_directory(self):
         """向后兼容的方法"""
         self._browse_and_add_folder()