diff --git a/packages/core/package.json b/packages/core/package.json
index 8aa4d25..b3bc3ad 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -40,11 +40,14 @@
     "@antv/x6": "^0.13.0",
     "ace-builds": "^1.4.12",
     "antd": "^4.5.3",
+    "lodash.merge": "^4.6.2",
+    "query-string": "^6.13.7",
     "react-ace": "^9.1.3",
     "react-color": "^2.18.1",
     "react-json-view": "^1.19.1"
   },
   "devDependencies": {
+    "@types/lodash.merge": "^4.6.6",
     "@types/react": "^16.9.34",
     "@types/react-color": "^3.0.4",
     "@types/react-dom": "^16.9.7",
diff --git a/packages/core/src/api/index.ts b/packages/core/src/api/index.ts
index 68c735c..710499c 100644
--- a/packages/core/src/api/index.ts
+++ b/packages/core/src/api/index.ts
@@ -3,10 +3,18 @@ export interface ILocalConfig {
   port: string;
 }
 
+export type ActionType = 'create' | 'update' | 'remove';
+
+export interface IModifyGraphAction {
+  type: string;
+  actionType: ActionType;
+  data: any;
+}
+
 export const localConfig: ILocalConfig = {
   ip: '127.0.0.1',
   port: '3500'
-};
+}
 
 export const updateLocalConfig = (config: ILocalConfig) => {
   localConfig.ip = config.ip || localConfig.ip;
@@ -27,3 +35,31 @@ export const localSave = (data: any) => {
     body: JSON.stringify(data)
   });
 }
+
+export const queryGraph = (projectId: string) => {
+  return fetch('/api/queryGraph', {
+    method: 'POST',
+    headers: {'Content-Type': 'application/json;charset=utf-8'},
+    body: JSON.stringify({
+      projectId
+    })
+  }).then(res => res.json()).then(res => {
+    const {success} = res;
+    if(success) {
+      return res;
+    } else {
+      return Promise.reject(res);
+    }
+  })
+}
+
+export const modifyGraph = (projectId: string, actions: IModifyGraphAction[]) => {
+  return fetch('/api/modifyGraph', {
+    method: 'POST',
+    headers: {'Content-Type': 'application/json;charset=utf-8'},
+    body: JSON.stringify({
+      projectId,
+      actions
+    })
+  });
+}
diff --git a/packages/core/src/mods/flowChart/createFlowChart.ts b/packages/core/src/mods/flowChart/createFlowChart.ts
index 3942c4d..e83f604 100644
--- a/packages/core/src/mods/flowChart/createFlowChart.ts
+++ b/packages/core/src/mods/flowChart/createFlowChart.ts
@@ -3,6 +3,7 @@ import {Cell, Edge, Graph, Node} from '@antv/x6';
 import {MIN_ZOOM, MAX_ZOOM} from '../../common/const';
 import baseCellSchemaMap from '../../common/baseCell';
 import previewCellSchemaMap from '../../common/previewCell';
+import {registerServerStorage} from './registerServerStorage';
 import MiniMapSimpleNode from '../../components/miniMapSimpleNode';
 
 // X6 register base/preview cell shape
@@ -32,25 +33,6 @@ const registerEvents = (flowChart: Graph): void => {
       }
     }
   });
-  flowChart.on('edge:mouseenter', (args) => {
-    const cell = args.cell as Cell;
-    cell.addTools([
-      {
-        name: 'target-arrowhead',
-        args: {
-          attrs: {
-            d: 'M -10.5 -6 1 0 -10.5 6 Z',
-            'stroke-width': 0,
-            fill: '#333'
-          }
-        }
-      }
-    ]);
-  });
-  flowChart.on('edge:mouseleave', (args) => {
-    const cell = args.cell as Cell;
-    cell.removeTools(['target-arrowhead']);
-  });
 };
 
 const registerShortcuts = (flowChart: Graph): void => {
@@ -156,6 +138,7 @@ const createFlowChart = (container: HTMLDivElement, miniMapContainer: HTMLDivEle
   });
   registerEvents(flowChart);
   registerShortcuts(flowChart);
+  registerServerStorage(flowChart);
   return flowChart;
 };
 
diff --git a/packages/core/src/mods/flowChart/index.tsx b/packages/core/src/mods/flowChart/index.tsx
index 336c6c0..b6a1ae2 100644
--- a/packages/core/src/mods/flowChart/index.tsx
+++ b/packages/core/src/mods/flowChart/index.tsx
@@ -1,8 +1,11 @@
-import React, {useRef, useEffect} from 'react';
+import React, { useRef, useEffect } from 'react';
 
 import styles from './index.module.less';
 
-import {Graph} from '@antv/x6';
+import { message } from 'antd';
+import { Graph } from '@antv/x6';
+import { queryGraph } from '../../api';
+import { parseQuery } from '../../utils';
 import createFlowChart from './createFlowChart';
 
 interface IProps {
@@ -10,15 +13,29 @@ interface IProps {
 }
 
 const FlowChart: React.FC<IProps> = props => {
+
   const {onReady} = props;
   const graphRef = useRef<HTMLDivElement>(null);
   const miniMapRef = useRef<HTMLDivElement>(null);
+
   useEffect(() => {
-    if(graphRef.current && miniMapRef.current) {
+    if (graphRef.current && miniMapRef.current) {
       const graph = createFlowChart(graphRef.current, miniMapRef.current);
       onReady(graph);
+      fetchData(graph);
     }
   }, []);
+
+  const fetchData = (graph: Graph) => {
+    const { projectId } = parseQuery();
+    queryGraph(projectId as string).then(res => {
+      const { data: dsl } = res;
+      graph.fromJSON(dsl);
+    }).catch(err => {
+      message.error(err.msg);
+    });
+  };
+
   return (
     <div className={styles.container}>
       <div className={styles.flowChart} ref={graphRef}/>
diff --git a/packages/core/src/mods/flowChart/registerServerStorage.ts b/packages/core/src/mods/flowChart/registerServerStorage.ts
new file mode 100644
index 0000000..63b080d
--- /dev/null
+++ b/packages/core/src/mods/flowChart/registerServerStorage.ts
@@ -0,0 +1,96 @@
+import { Graph } from '@antv/x6';
+import merge from 'lodash.merge';
+import { parseQuery } from '../../utils';
+import { modifyGraph, ActionType, IModifyGraphAction } from '../../api';
+
+const { projectId } = parseQuery();
+const memQueue: IModifyGraphAction[] = [];
+
+const validate = (type: string, data: any) => {
+  if (type === 'node') {
+    return true;
+  } else if (type === 'edge') {
+    const { source, target } = data;
+    return source.cell && target.cell;
+  } else {
+    return false;
+  }
+}
+
+const enqueue = (type: string, actionType: ActionType, data: any) => {
+
+  if (!validate(type, data)) {
+    return;
+  }
+
+  const foundIndex = memQueue.findIndex(item => item.type === type && item.actionType === actionType);
+  if (foundIndex > -1) {
+    const deleted = memQueue.splice(foundIndex, 1)[0];
+    data = merge(deleted, data);
+  }
+  memQueue.push({ type, actionType, data });
+};
+
+let modifyActionTimer = -1;
+const save = (flowChart: Graph, type: string, actionType: ActionType, data: any) => {
+  enqueue(type, actionType, data);
+  clearTimeout(modifyActionTimer);
+  modifyActionTimer = setTimeout(() => {
+    const pushedActions = memQueue.slice(0);
+    if(pushedActions.length > 0) {
+      flowChart.trigger('graph:change:modify');
+      modifyGraph(projectId, memQueue).then(res => {
+        memQueue.splice(0, pushedActions.length);
+        flowChart.trigger('graph:modified', {success: true});
+      }).catch(err => {
+        flowChart.trigger('graph:modified', {success: true, error: err});
+      });
+    }
+  }, 100);
+};
+
+type ActionEventMap = {[key: string]: string[]};
+const NODE_ACTION_EVENT_MAP: ActionEventMap = {
+  create: ['node:added'],
+  remove: ['node:removed'],
+  update: [
+    'node:moved',
+    'node:resized',
+    'node:rotated',
+    'node:change:ports',
+    'node:change:attrs',
+    'node:change:data',
+    'node:change:zIndex'
+  ]
+};
+
+const EDGE_ACTION_EVENT_MAP: ActionEventMap = {
+  create: ['edge:connected'],
+  remove: ['edge:removed'],
+  update: [
+    'edge:moved',
+  ]
+};
+
+export const registerServerStorage = (flowChart: Graph) => {
+
+  Object.keys(NODE_ACTION_EVENT_MAP).forEach((actionType) => {
+    const events = NODE_ACTION_EVENT_MAP[actionType];
+    events.forEach(event => {
+      flowChart.on(event, (args: any) => {
+        console.log('node event:', event, 'args:', args);
+        save(flowChart, 'node', actionType as ActionType, args.node.toJSON());
+      });
+    });
+  });
+
+  Object.keys(EDGE_ACTION_EVENT_MAP).forEach((actionType) => {
+    const events = EDGE_ACTION_EVENT_MAP[actionType];
+    events.forEach(event => {
+      flowChart.on(event, (args: any) => {
+        console.log('edge event:', event, 'args:', args);
+        save(flowChart, 'edge', actionType as ActionType, args.edge.toJSON());
+      });
+    });
+  });
+};
diff --git a/packages/core/src/mods/toolBar/index.tsx b/packages/core/src/mods/toolBar/index.tsx
index e374771..8b23dbd 100644
--- a/packages/core/src/mods/toolBar/index.tsx
+++ b/packages/core/src/mods/toolBar/index.tsx
@@ -5,6 +5,7 @@ import styles from './index.module.less';
 
 import {Graph} from '@antv/x6';
 import widgets from './widgets';
+import ModifyStatus from './widgets/modifyStatus';
 
 interface IProps {
   flowChart: Graph;
@@ -31,6 +32,7 @@ const ToolBar: React.FC<IProps> = props => {
           })}
         </div>
       ))}
+      <ModifyStatus flowChart={flowChart}/>
     </div>
   );
 };
diff --git a/packages/core/src/mods/toolBar/widgets/index.module.less b/packages/core/src/mods/toolBar/widgets/index.module.less
index 4f1b086..5472385 100644
--- a/packages/core/src/mods/toolBar/widgets/index.module.less
+++ b/packages/core/src/mods/toolBar/widgets/index.module.less
@@ -50,6 +50,10 @@
   }
 }
 
+.modifyStatusContainer {
+  margin-left: 8px;
+}
+
 .bgColorContainer, .textColorContainer, .borderColorContainer {
 
   position: relative;
diff --git a/packages/core/src/mods/toolBar/widgets/modifyStatus.tsx b/packages/core/src/mods/toolBar/widgets/modifyStatus.tsx
new file mode 100644
index 0000000..f64e08e
--- /dev/null
+++ b/packages/core/src/mods/toolBar/widgets/modifyStatus.tsx
@@ -0,0 +1,69 @@
+import React, { useEffect, useState } from 'react';
+
+import styles from './index.module.less';
+
+import { Graph } from '@antv/x6';
+
+enum Status {
+  pending = 0,
+  syncing = 1,
+  successful = 2,
+  failed = 3
+}
+
+interface IProps {
+  flowChart: Graph
+}
+
+const STATUS_TEXT_MAP = {
+  [Status.pending]: '',
+  [Status.syncing]: {
+    color: '#999',
+    text: '正在保存...'
+  },
+  [Status.successful]: {
+    color: '#999',
+    text: '所有更改已保存'
+  },
+  [Status.failed]: {
+    color: '#EC5B56',
+    text: '同步失败，进入离线模式'
+  }
+};
+
+const ModifyStatus: React.FC<IProps> = (props) => {
+
+  const {flowChart} = props;
+  const [status, setStatus] = useState<Status>(Status.pending);
+
+  useEffect(() => {
+    flowChart.on('graph:change:modify', () => {
+      setStatus(Status.syncing);
+    });
+    flowChart.on('graph:modified', (res: any) => {
+      const {success} = res;
+      if(success) {
+        setStatus(Status.successful);
+      } else {
+        setStatus(Status.failed);
+      }
+    });
+    return () => {
+      flowChart.off('graph:change:modify');
+      flowChart.off('graph:modified');
+    };
+  }, []);
+
+  if(status === Status.pending) {
+    return null;
+  } else {
+    const {color, text} = STATUS_TEXT_MAP[status];
+    return (
+      <div className={styles.modifyStatusContainer}>
+        <span style={{color}}>{text}</span>
+      </div>
+    );
+  }
+};
+
+export default ModifyStatus;
diff --git a/packages/core/src/utils/index.ts b/packages/core/src/utils/index.ts
index f69106d..3ef74f3 100644
--- a/packages/core/src/utils/index.ts
+++ b/packages/core/src/utils/index.ts
@@ -1,3 +1,5 @@
+import { parse } from 'query-string';
+
 export const safeParse = (json: string): Object => {
   try {
     return JSON.parse(json);
@@ -24,3 +26,14 @@ export const safeGet = (obj: any, keyChain: string, defaultVal?: any): any => {
 
   return retVal;
 };
+
+const PARSE_CONFIG = {
+  skipNull: true,
+  skipEmptyString: true,
+  parseNumbers: false,
+  parseBooleans: false,
+};
+
+export const parseQuery = (): {[key: string]: any} => {
+  return parse(location.search, PARSE_CONFIG);
+};