diff --git a/frontend/src/pages/Workflow/NodeDesign/Design.tsx b/frontend/src/pages/Workflow/NodeDesign/Design.tsx
index a99a540a..9c76a0ab 100644
--- a/frontend/src/pages/Workflow/NodeDesign/Design.tsx
+++ b/frontend/src/pages/Workflow/NodeDesign/Design.tsx
@@ -398,8 +398,15 @@ const NodeDesignForm: React.FC = () => {
             };
             
             console.log('Save data:', saveData);
-            await service.saveNodeDefinition(saveData);
-            message.success('保存成功');
+            
+            // 根据是否是编辑模式调用不同的接口
+            if (isEdit && editData?.id) {
+                await service.updateNodeDefinition(editData.id, saveData);
+                message.success('更新成功');
+            } else {
+                await service.saveNodeDefinition(saveData);
+                message.success('保存成功');
+            }
         } catch (error) {
             console.error('保存失败:', error);
             message.error('保存失败');
diff --git a/frontend/src/pages/Workflow/NodeDesign/service.ts b/frontend/src/pages/Workflow/NodeDesign/service.ts
index 49b525c9..f4cc7b64 100644
--- a/frontend/src/pages/Workflow/NodeDesign/service.ts
+++ b/frontend/src/pages/Workflow/NodeDesign/service.ts
@@ -1,16 +1,16 @@
 // 节点设计相关服务
 
 import request from '@/utils/request';
-import type { NodeDesignQuery, NodeDefinitionResponse, NodeDesignDataResponse } from './types';
+import type {NodeDesignQuery, NodeDefinitionResponse, NodeDesignDataResponse} from './types';
 
 const BASE_URL = '/api/v1/workflow/node-definition';
 
 // 获取节点设计列表
 export const getNodeDefinitions = (params: NodeDesignQuery) =>
-    request.get<NodeDefinitionResponse>(`${BASE_URL}/page`, { params });
+    request.get<NodeDefinitionResponse>(`${BASE_URL}/page`, {params});
 
 // 获取节点设计详情
-export const getNodeDefinition = (id: string) =>
+export const getNodeDefinition = (id: number) =>
     request.get<NodeDefinitionResponse>(`${BASE_URL}/${id}`);
 
 
@@ -21,3 +21,6 @@ export const getNodeDefinitionsDefined = () =>
 // 保存节点定义
 export const saveNodeDefinition = (data: NodeDesignDataResponse) =>
     request.post<void>(`${BASE_URL}`, data);
+
+export const updateNodeDefinition = (id: number, data: NodeDesignDataResponse) =>
+    request.put<void>(`${BASE_URL}/${id}`, data);