diff --git a/frontend/src/pages/Workflow/Definition/Design/index.tsx b/frontend/src/pages/Workflow/Definition/Design/index.tsx
index 726da214..4948fb8f 100644
--- a/frontend/src/pages/Workflow/Definition/Design/index.tsx
+++ b/frontend/src/pages/Workflow/Definition/Design/index.tsx
@@ -3,6 +3,7 @@ import { useParams, useNavigate } from 'react-router-dom';
 import { Button, Space, Card, Row, Col, message, Modal } from 'antd';
 import { ArrowLeftOutlined, SaveOutlined, PlayCircleOutlined } from '@ant-design/icons';
 import { Graph, Cell } from '@antv/x6';
+import '@antv/x6-plugin-snapline';
 import { getDefinitionDetail, saveDefinition } from '../service';
 import { getNodeDefinitionList } from './service';
 import NodePanel from './components/NodePanel';
@@ -119,9 +120,9 @@ const WorkflowDesign: React.FC = () => {
         };
     }, [graphContainerRef, id, nodeDefinitions, isNodeDefinitionsLoaded]);
 
-    const loadDefinitionDetail = async (graphInstance: Graph, definitionId: number) => {
+    const loadDefinitionDetail = async (graphInstance: Graph, definitionId: string) => {
         try {
-            const response = await getDefinitionDetail(definitionId);
+            const response = await getDefinitionDetail(Number(definitionId));
             setTitle(`工作流设计 - ${response.name}`);
             setDefinitionData(response);
 
@@ -131,8 +132,6 @@ const WorkflowDesign: React.FC = () => {
 
             // 创建节点
             response.graph?.nodes?.forEach((workflowDefinitionNode: any) => {
-                console.log('Creating node with data:', workflowDefinitionNode);  // 添加日志
-
                 const node = addNodeToGraph(false, graphInstance, workflowDefinitionNode, nodeDefinitions);
                 // 保存节点配置
                 node.setProp('config', workflowDefinitionNode.config);
@@ -155,8 +154,8 @@ const WorkflowDesign: React.FC = () => {
                 }
             });
 
-            // 应用自动布局
-            applyAutoLayout(graphInstance);
+            // 传入节点数据，只在没有位置信息时应用自动布局
+            applyAutoLayout(graphInstance, response.graph?.nodes || []);
         } catch (error) {
             console.error('加载工作流定义失败:', error);
             message.error('加载工作流定义失败');
@@ -217,6 +216,7 @@ const WorkflowDesign: React.FC = () => {
             const nodes = graph.getNodes().map(node => {
                 const nodeDefinition = node.getProp('nodeDefinition');
                 const nodeType = node.getProp('type');
+                const position = node.getPosition();
 
                 return {
                     id: node.id,
@@ -230,7 +230,11 @@ const WorkflowDesign: React.FC = () => {
                             height: node.size().height
                         },
                         style: nodeDefinition?.graphConfig.uiSchema.style,
-                        ports: nodeDefinition?.graphConfig.uiSchema.ports
+                        ports: nodeDefinition?.graphConfig.uiSchema.ports,
+                        position: {
+                            x: position.x,
+                            y: position.y
+                        }
                     },
                     config: node.getProp('config') || {}
                 };
diff --git a/frontend/src/pages/Workflow/Definition/Design/utils/layoutUtils.ts b/frontend/src/pages/Workflow/Definition/Design/utils/layoutUtils.ts
index 4cf99530..c09d4d43 100644
--- a/frontend/src/pages/Workflow/Definition/Design/utils/layoutUtils.ts
+++ b/frontend/src/pages/Workflow/Definition/Design/utils/layoutUtils.ts
@@ -1,11 +1,40 @@
 import { Graph } from '@antv/x6';
 import dagre from 'dagre';
 
+interface NodeData {
+    graph: {
+        position?: {
+            x: number;
+            y: number;
+        };
+    };
+}
+
+/**
+ * 检查是否所有节点都有位置信息
+ * @param nodes 节点列表
+ * @returns 是否所有节点都有位置信息
+ */
+const hasAllNodesPosition = (nodes: NodeData[]) => {
+    return nodes.every(node => {
+        const graphData = node.graph;
+        return graphData && graphData.position && 
+               typeof graphData.position.x === 'number' && 
+               typeof graphData.position.y === 'number';
+    });
+};
+
 /**
  * 应用自动布局
  * @param graph 图形实例
+ * @param nodes 节点数据列表
  */
-export const applyAutoLayout = (graph: Graph) => {
+export const applyAutoLayout = (graph: Graph, nodes: NodeData[] = []) => {
+    // 如果所有节点都有位置信息，则不应用自动布局
+    if (nodes.length > 0 && hasAllNodesPosition(nodes)) {
+        return;
+    }
+
     const g = new dagre.graphlib.Graph();
     g.setGraph({
         rankdir: 'LR',
@@ -18,8 +47,8 @@ export const applyAutoLayout = (graph: Graph) => {
     g.setDefaultEdgeLabel(() => ({}));
 
     // 添加节点
-    const nodes = graph.getNodes();
-    nodes.forEach(node => {
+    const graphNodes = graph.getNodes();
+    graphNodes.forEach(node => {
         g.setNode(node.id, {
             width: node.getSize().width,
             height: node.getSize().height,
@@ -36,7 +65,7 @@ export const applyAutoLayout = (graph: Graph) => {
     dagre.layout(g);
 
     // 应用布局结果
-    nodes.forEach(node => {
+    graphNodes.forEach(node => {
         const nodeWithPosition = g.node(node.id);
         node.position(
             nodeWithPosition.x - nodeWithPosition.width / 2,
diff --git a/frontend/src/pages/Workflow/Definition/Design/utils/nodeUtils.ts b/frontend/src/pages/Workflow/Definition/Design/utils/nodeUtils.ts
index 9e1ba52c..71b84ef8 100644
--- a/frontend/src/pages/Workflow/Definition/Design/utils/nodeUtils.ts
+++ b/frontend/src/pages/Workflow/Definition/Design/utils/nodeUtils.ts
@@ -3,20 +3,23 @@ import {convertPortConfig} from '../constants';
 
 /**
  * 添加节点到图形
+ * @param isNew 是否为新节点
  * @param graph X6 Graph实例
- * @param node 节点数据
- * @param position 节点位置（可选）
+ * @param workflowDefinitionNode 工作流节点定义
+ * @param workflowNodeDefinitionList 工作流节点定义列表
+ * @param position 新节点的位置（可选）
  * @returns 创建的节点实例
  */
 export const addNodeToGraph = (
-    isNew: Boolean,
+    isNew: boolean,
     graph: Graph,
     workflowDefinitionNode: any,
     workflowNodeDefinitionList: any,
-    position?: { x: number, y: number }
+    position?: { x: number; y: number }
 ) => {
     let nodeDefinition = workflowNodeDefinitionList.find(def => def.type === workflowDefinitionNode.type);
     let uiGraph = isNew ? nodeDefinition.graphConfig.uiSchema : workflowDefinitionNode.graph;
+    
     // 根据形状类型设置正确的 shape
     let shape = 'rect';  // 默认使用矩形
     if (uiGraph.shape === 'circle') {
@@ -24,8 +27,9 @@ export const addNodeToGraph = (
     } else if (uiGraph.shape === 'diamond') {
         shape = 'polygon';
     }
-    // 创建节点
-    return graph.addNode({
+
+    // 创建节点配置
+    const nodeConfig = {
         inherit: 'rect',
         width: uiGraph.size.width,
         height: uiGraph.size.height,
@@ -40,14 +44,26 @@ export const addNodeToGraph = (
                 text: isNew ? nodeDefinition.name : workflowDefinitionNode.name
             },
         },
-        shape,  // 使用映射后的形状
-        ...(position && {x: position.x, y: position.y}),
-        // 如果是已保存的节点，使用其ID和位置
-        ...(uiGraph.id && {id: uiGraph.id}),
-        ...(uiGraph.graph?.position && {position: uiGraph.graph.position}),
+        shape,
         type: isNew ? nodeDefinition.type : workflowDefinitionNode.type,
         code: uiGraph.code,
         ports: convertPortConfig(uiGraph.ports),
         nodeDefinition: nodeDefinition
-    });
+    };
+
+    // 设置节点位置
+    if (isNew && position) {
+        // 新节点：使用传入的position
+        Object.assign(nodeConfig, { x: position.x, y: position.y });
+    } else if (!isNew && workflowDefinitionNode.graph?.position) {
+        // 已有节点：使用后端返回的position
+        Object.assign(nodeConfig, { position: workflowDefinitionNode.graph.position });
+    }
+
+    // 设置节点ID（如果有）
+    if (uiGraph.id) {
+        Object.assign(nodeConfig, { id: uiGraph.id });
+    }
+
+    return graph.addNode(nodeConfig);
 }; 
\ No newline at end of file