diff --git a/xian_favor/api.py b/xian_favor/api.py
index 044d8e7..4ef9561 100644
--- a/xian_favor/api.py
+++ b/xian_favor/api.py
@@ -112,6 +112,28 @@ def complete_item(item_id):
     return jsonify({'success': True, 'data': item})
 
 
+@app.route('/api/items/<int:item_id>/reopen', methods=['POST'])
+def reopen_item(item_id):
+    """重新打开待办"""
+    item = db.get_item(item_id)
+    if not item:
+        return jsonify({'success': False, 'error': '条目不存在'}), 404
+    
+    if item['type'] != 'todo':
+        return jsonify({'success': False, 'error': '不是待办事项'}), 400
+    
+    # 获取请求中的目标状态，默认为 pending
+    data = request.get_json() or {}
+    new_status = data.get('status', 'pending')
+    
+    if new_status not in ['pending', 'in_progress']:
+        return jsonify({'success': False, 'error': '无效状态'}), 400
+    
+    db.update_item(item_id, status=new_status)
+    item = db.get_item(item_id)
+    return jsonify({'success': True, 'data': item})
+
+
 @app.route('/api/tags', methods=['GET'])
 def list_tags():
     """列出标签"""
@@ -1017,8 +1039,9 @@ function renderItems(items) {
             <div class="card-body">
                 <div class="d-flex justify-content-between align-items-start">
                     <div style="flex: 1; min-width: 0;">
-                        <h6 class="card-title text-truncate mb-1">
+                        <h6 class="card-title text-truncate mb-1 ${item.type === 'todo' && item.status === 'completed' ? 'text-muted' : ''}">
                             ${getTypeIcon(item.type)} ${item.title || truncate(item.content || item.url, 30)}
+                            ${item.type === 'todo' && item.status === 'completed' ? ' ✓' : ''}
                         </h6>
                         <p class="card-text text-muted small mb-0 text-truncate" style="font-size:12px;">
                             ${item.url ? truncate(item.url, 50) : item.content ? truncate(item.content, 50) : item.note ? truncate(item.note, 50) : ''}
@@ -1030,6 +1053,7 @@ function renderItems(items) {
                         <button class="btn btn-sm btn-outline-info py-0 px-1" onclick="showSendEmailModal(${item.id})" title="发送邮件"><i class="bi bi-envelope" style="font-size:11px;"></i></button>
                         <button class="btn btn-sm btn-outline-primary py-0 px-1" onclick="openEditModal(${item.id})" title="编辑"><i class="bi bi-pencil" style="font-size:11px;"></i></button>
                         ${item.type === 'todo' && item.status !== 'completed' ? `<button class="btn btn-sm btn-outline-success py-0 px-1" onclick="completeItem(${item.id})" title="完成"><i class="bi bi-check-lg" style="font-size:11px;"></i></button>` : ''}
+                        ${item.type === 'todo' && item.status === 'completed' ? `<button class="btn btn-sm btn-outline-warning py-0 px-1" onclick="reopenItem(${item.id})" title="重新打开"><i class="bi bi-arrow-counterclockwise" style="font-size:11px;"></i></button>` : ''}
                         <button class="btn btn-sm btn-outline-danger py-0 px-1" onclick="deleteItem(${item.id})" title="删除"><i class="bi bi-trash" style="font-size:11px;"></i></button>
                     </div>
                 </div>
@@ -1138,6 +1162,20 @@ async function completeItem(id) {
     refreshData();
 }
 
+// 重新打开待办
+async function reopenItem(id) {
+    const res = await fetch(`${API_BASE}/items/${id}/reopen`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ status: 'pending' })
+    });
+    
+    if (res.ok) {
+        refreshData();
+        loadReminders();  // 刷新提醒
+    }
+}
+
 // 删除条目
 async function deleteItem(id) {
     if (!confirm('确认删除?')) return;