diff --git a/dsRag/Start.py b/dsRag/Start.py
index 1e7292b9..f06e90a9 100644
--- a/dsRag/Start.py
+++ b/dsRag/Start.py
@@ -182,12 +182,21 @@ async def get_tree_data():
         # 构建节点映射
         nodes = {}
         for row in rows:
+            prerequisite_data = json.loads(row[4]) if row[4] else []
+            # 转换先修知识格式
+            if isinstance(prerequisite_data, list) and len(prerequisite_data) > 0 and isinstance(prerequisite_data[0], dict):
+                # 已经是新格式
+                prerequisites = prerequisite_data
+            else:
+                # 转换为新格式
+                prerequisites = [{"id": str(id), "title": title} for id, title in (prerequisite_data or [])] if prerequisite_data else None
+            
             nodes[row[0]] = {
                 "id": row[0],
                 "title": row[1],
                 "parent_id": row[2] if row[2] is not None else 0,
                 "isParent": not row[3],
-                "prerequisite": json.loads(row[4]) if row[4] and len(json.loads(row[4])) > 0 else None,
+                "prerequisite": prerequisites if prerequisites and len(prerequisites) > 0 else None,
                 "related": json.loads(row[5]) if row[5] and len(json.loads(row[5])) > 0 else None,
                 "open": True
             }
diff --git a/dsRag/static/tree.html b/dsRag/static/tree.html
index 87aa237b..bc5ddc2c 100644
--- a/dsRag/static/tree.html
+++ b/dsRag/static/tree.html
@@ -109,7 +109,8 @@
 
                 // 修改后的维护按钮显示逻辑
                 const isThirdLevel = node.parent_id && allNodes.find(n => n.id === node.parent_id)?.parent_id;
-                html += '<td>' + (node.prerequisite || '') +
+                html += '<td>' + (node.prerequisite && node.prerequisite.length > 0 ? 
+                    node.prerequisite.map(p => p.title).join(', ') : '') +
                     (isThirdLevel ? '<button onclick="prerequisiteUpdate(\'' + node.id + '\')">维护</button>' : '') + '</td>';
                 html += '<td>' + (node.related || '') +
                     (isThirdLevel ? '<button onclick="relatedUpdate(\'' + node.id + '\')">维护</button>' : '') + '</td>';
@@ -213,7 +214,7 @@
 
         // 为每个节点创建checkbox
         allNodes.forEach(node => {
-            // 只处理二级节点
+            console.log('Node title:', typeof node.title, node.title); // 添加调试
             if (node.id !== currentNodeId && !node.isParent) {
                 const div = document.createElement('div');
                 const checkbox = document.createElement('input');
@@ -223,7 +224,7 @@
 
                 const label = document.createElement('label');
                 label.htmlFor = `node_${node.id}`;
-                label.textContent = `【${findParentTitle(node)}】${node.title}`;
+                label.textContent = node.title;  // 修改这里，直接显示节点title
 
                 div.appendChild(checkbox);
                 div.appendChild(label);
@@ -248,9 +249,8 @@
                 console.error('找不到当前节点:', currentNodeId);
                 return;
             }
-            
-            console.log(`当前操作的二级节点ID: ${currentNodeId}, 名称: ${currentNode.title}`);
-            
+
+
             const selectedNodes = [];
             const checkboxes = container.querySelectorAll('input[type="checkbox"]:checked');
             checkboxes.forEach(checkbox => {
@@ -258,12 +258,11 @@
                 if (node) {
                     selectedNodes.push({
                         id: node.id,
-                        title: node.title,
-                        parentTitle: node.isParent ? '' : findParentTitle(node)
+                        title: node.title
                     });
                 }
             });
-            
+            console.log(`当前操作的三级节点ID: ${currentNodeId}, 名称: ${currentNode.title}`);
             console.log('选中的先修知识:');
             selectedNodes.forEach(node => {
                 if (node.parentTitle) {
@@ -272,7 +271,31 @@
                     console.log(`ID: ${node.id}, 名称: ${node.title}`);
                 }
             });
-            
+            // 调用后端接口
+            fetch('/api/update-prerequisites', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                body: JSON.stringify({
+                    node_id: currentNodeId,
+                    prerequisites: selectedNodes
+                })
+            })
+                .then(response => response.json())
+                .then(data => {
+                    if (data.code === 0) {
+                        alert('保存成功');
+                        location.reload(); // 刷新页面
+                    } else {
+                        alert('保存失败: ' + data.message);
+                    }
+                })
+                .catch(error => {
+                    console.error('Error:', error);
+                    alert('保存出错');
+                });
+
             modal.remove();
         };