diff --git a/src/App.vue b/src/App.vue
index 9b3d174..2e026ee 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -14,7 +14,7 @@ import { useVueFlow } from '@vue-flow/core';
 import DialogManager from './components/DialogManager.vue';
 
 const filesStore = useFilesStore();
-const { updateNode } = useVueFlow();
+const { updateNode,toObject,fromObject } = useVueFlow();
 
 const width = ref('100%');
 const height = ref('100vh');
@@ -100,6 +100,7 @@ watch(
     if (oldVal && flowEditorRef.value && flowEditorRef.value.getViewport) {
       const viewport = flowEditorRef.value.getViewport();
       filesStore.updateFileViewport(oldVal, viewport);
+      filesStore.updateFileFlowData(oldVal, toObject());
     }
     lastActiveFile.value = newVal;
   }
@@ -135,9 +136,9 @@ watch(
           <FlowEditor
             ref="flowEditorRef"
             :height="contentHeight"
-            :nodes="filesStore.activeFileNodes"
-            :edges="filesStore.activeFileEdges"
-            :viewport="filesStore.getFileViewport(filesStore.activeFile)"
+            :nodes="filesStore.getFileFlowData(filesStore.activeFile)?.nodes || []"
+            :edges="filesStore.getFileFlowData(filesStore.activeFile)?.edges || []"
+            :viewport="filesStore.getFileFlowData(filesStore.activeFile)?.viewport || { x: 0, y: 0, zoom: 1 }"
             :key="filesStore.activeFile"
           />
         </div>
diff --git a/src/components/flow/FlowEditor.vue b/src/components/flow/FlowEditor.vue
index 8c5d77c..5810db9 100644
--- a/src/components/flow/FlowEditor.vue
+++ b/src/components/flow/FlowEditor.vue
@@ -189,18 +189,6 @@ onUnmounted(() => {
 const lastActiveFile = ref(filesStore.activeFile);
 
 const flowEditorRef = ref();
-
-watch(
-  () => filesStore.activeFile,
-  (newVal, oldVal) => {
-    // 切换前保存旧 tab 的 viewport
-    if (oldVal && flowEditorRef.value && flowEditorRef.value.getViewport) {
-      const viewport = flowEditorRef.value.getViewport();
-      filesStore.updateFileViewport(oldVal, viewport);
-    }
-    lastActiveFile.value = newVal;
-  }
-);
 </script>
 
 <template>
@@ -209,8 +197,8 @@ watch(
       <!-- 中间流程图区域 -->
       <div class="flow-container">
         <VueFlow
-            :nodes="filesStore.activeFileNodes"
-            :edges="filesStore.activeFileEdges"
+            :nodes="props.nodes"
+            :edges="props.edges"
             @nodes-change="handleNodesChange"
             @edges-change="handleEdgesChange"
             @connect="handleConnect"
diff --git a/src/ts/useStore.ts b/src/ts/useStore.ts
index 7711c3c..b7226d3 100644
--- a/src/ts/useStore.ts
+++ b/src/ts/useStore.ts
@@ -15,9 +15,7 @@ interface FlowFile {
     visible: boolean;
     type: string;
     groups: FileGroup[];
-    nodes?: Node[];
-    edges?: Edge[];
-    viewport?: { x: number; y: number; zoom: number };
+    flowData?: any;
 }
 
 export const useFilesStore = defineStore('files', () => {
@@ -33,21 +31,23 @@ export const useFilesStore = defineStore('files', () => {
     // 获取当前活动文件的节点和边
     const activeFileNodes = computed(() => {
         const file = fileList.value.find(f => f.name === activeFile.value);
-        return file?.nodes || [];
+        return file?.flowData?.nodes || [];
     });
 
     const activeFileEdges = computed(() => {
         const file = fileList.value.find(f => f.name === activeFile.value);
-        return file?.edges || [];
+        return file?.flowData?.edges || [];
     });
 
     // 添加新文件
     const addFile = (file: FlowFile) => {
-        // 确保新文件包含空的节点和边数组
         const newFile = {
             ...file,
-            nodes: [],
-            edges: []
+            flowData: {
+                nodes: [],
+                edges: [],
+                viewport: { x: 0, y: 0, zoom: 1 }
+            }
         };
         fileList.value.push(newFile);
         activeFile.value = file.name;
@@ -72,21 +72,18 @@ export const useFilesStore = defineStore('files', () => {
     const addNode = (node: Node) => {
         const file = fileList.value.find(f => f.name === activeFile.value);
         if (!file) return;
-
-        if (!file.nodes) file.nodes = [];
-        file.nodes.push(node);
+        if (!file.flowData) file.flowData = { nodes: [], edges: [], viewport: { x: 0, y: 0, zoom: 1 } };
+        file.flowData.nodes.push(node);
     };
 
     // 更新节点
     const updateNode = (nodeId: string, updateData: Partial<Node>) => {
         const file = fileList.value.find(f => f.name === activeFile.value);
-        if (!file || !file.nodes) return;
-
-        const nodeIndex = file.nodes.findIndex(n => n.id === nodeId);
+        if (!file || !file.flowData || !file.flowData.nodes) return;
+        const nodeIndex = file.flowData.nodes.findIndex(n => n.id === nodeId);
         if (nodeIndex === -1) return;
-
-        file.nodes[nodeIndex] = {
-            ...file.nodes[nodeIndex],
+        file.flowData.nodes[nodeIndex] = {
+            ...file.flowData.nodes[nodeIndex],
             ...updateData,
         };
     };
@@ -94,12 +91,11 @@ export const useFilesStore = defineStore('files', () => {
     // 删除节点
     const removeNode = (nodeId: string) => {
         const file = fileList.value.find(f => f.name === activeFile.value);
-        if (!file || !file.nodes) return;
-
-        file.nodes = file.nodes.filter(n => n.id !== nodeId);
+        if (!file || !file.flowData || !file.flowData.nodes) return;
+        file.flowData.nodes = file.flowData.nodes.filter(n => n.id !== nodeId);
         // 同时删除相关的边
-        if (file.edges) {
-            file.edges = file.edges.filter(e => e.source !== nodeId && e.target !== nodeId);
+        if (file.flowData.edges) {
+            file.flowData.edges = file.flowData.edges.filter(e => e.source !== nodeId && e.target !== nodeId);
         }
     };
 
@@ -107,25 +103,22 @@ export const useFilesStore = defineStore('files', () => {
     const addEdge = (edge: Edge) => {
         const file = fileList.value.find(f => f.name === activeFile.value);
         if (!file) return;
-
-        if (!file.edges) file.edges = [];
-        file.edges.push(edge);
+        if (!file.flowData) file.flowData = { nodes: [], edges: [], viewport: { x: 0, y: 0, zoom: 1 } };
+        file.flowData.edges.push(edge);
     };
 
     // 删除边
     const removeEdge = (edgeId: string) => {
         const file = fileList.value.find(f => f.name === activeFile.value);
-        if (!file || !file.edges) return;
-
-        file.edges = file.edges.filter(e => e.id !== edgeId);
+        if (!file || !file.flowData || !file.flowData.edges) return;
+        file.flowData.edges = file.flowData.edges.filter(e => e.id !== edgeId);
     };
 
     // 更新节点位置
     const updateNodePosition = (nodeId: string, position: { x: number; y: number }) => {
         const file = fileList.value.find(f => f.name === activeFile.value);
-        if (!file || !file.nodes) return;
-
-        const node = file.nodes.find(n => n.id === nodeId);
+        if (!file || !file.flowData || !file.flowData.nodes) return;
+        const node = file.flowData.nodes.find(n => n.id === nodeId);
         if (node) {
             node.position = position;
         }
@@ -134,25 +127,37 @@ export const useFilesStore = defineStore('files', () => {
     // 更新节点顺序
     const updateNodesOrder = (nodes: Node[]) => {
         const file = fileList.value.find(f => f.name === activeFile.value);
-        if (!file) return;
-        file.nodes = nodes;
+        if (!file || !file.flowData) return;
+        file.flowData.nodes = nodes;
     };
 
     // 更新文件的 viewport
     const updateFileViewport = (fileName: string, viewport: { x: number; y: number; zoom: number }) => {
         const file = fileList.value.find(f => f.name === fileName);
-        if (file) file.viewport = viewport;
+        if (file && file.flowData) file.flowData.viewport = viewport;
     };
 
     const getFileViewport = (fileName: string): ViewportTransform => {
         const file = fileList.value.find(f => f.name === fileName);
-        const v = file?.viewport;
+        const v = file?.flowData?.viewport;
         if (v && typeof v.x === 'number' && typeof v.y === 'number' && typeof v.zoom === 'number') {
             return v as ViewportTransform;
         }
         return { x: 0, y: 0, zoom: 1 };
     };
 
+    // 更新文件的 flowData
+    const updateFileFlowData = (fileName: string, flowData: any) => {
+        const file = fileList.value.find(f => f.name === fileName);
+        if (file) file.flowData = flowData;
+    };
+
+    // 获取文件的 flowData
+    const getFileFlowData = (fileName: string): any => {
+        const file = fileList.value.find(f => f.name === fileName);
+        return file?.flowData;
+    };
+
     return {
         fileList,
         activeFile,
@@ -170,5 +175,7 @@ export const useFilesStore = defineStore('files', () => {
         updateNodesOrder,
         updateFileViewport,
         getFileViewport,
+        updateFileFlowData,
+        getFileFlowData,
     };
 });
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