diff --git a/packages/designer/src/builtins/simulator/host/create-simulator.ts b/packages/designer/src/builtins/simulator/host/create-simulator.ts
index c1959faed..e3412afd4 100644
--- a/packages/designer/src/builtins/simulator/host/create-simulator.ts
+++ b/packages/designer/src/builtins/simulator/host/create-simulator.ts
@@ -1,7 +1,8 @@
 // NOTE: 仅用作类型标注，切勿作为实体使用
 import { SimulatorRenderer } from '../renderer/renderer';
 import { SimulatorHost } from './host';
-import { AssetLevel, AssetLevels, AssetList, isAssetBundle, isAssetItem, isCSSUrl, AssetType, assetItem } from '../utils/asset';
+import { AssetLevel, AssetLevels, AssetList, isAssetBundle, isAssetItem, AssetType, assetItem } from '../utils/asset';
+import { isCSSUrl } from '../../../utils/is-css-url';
 
 export function createSimulator(host: SimulatorHost, iframe: HTMLIFrameElement, vendors: AssetList = []): Promise<SimulatorRenderer> {
   const win: any = iframe.contentWindow;
diff --git a/packages/designer/src/builtins/simulator/host/host.ts b/packages/designer/src/builtins/simulator/host/host.ts
index 56a571eab..b66dc85ff 100644
--- a/packages/designer/src/builtins/simulator/host/host.ts
+++ b/packages/designer/src/builtins/simulator/host/host.ts
@@ -12,7 +12,7 @@ import { LocationData } from '../../../designer/helper/location';
 import { NodeData } from '../../../designer/schema';
 import { ComponentDescriptionSpec } from '../../../designer/component-config';
 import { ReactInstance } from 'react';
-import { setNativeSelection } from '../../../utils/navtive-selection';
+import { setNativeSelection } from '../../../designer/helper/navtive-selection';
 import cursor from '../../../designer/helper/cursor';
 
 export interface SimulatorProps {
diff --git a/packages/designer/src/builtins/simulator/renderer/renderer.ts b/packages/designer/src/builtins/simulator/renderer/renderer.ts
index 22380d8d2..a9328551e 100644
--- a/packages/designer/src/builtins/simulator/renderer/renderer.ts
+++ b/packages/designer/src/builtins/simulator/renderer/renderer.ts
@@ -4,66 +4,14 @@ import { host } from './host';
 import SimulatorRendererView from './renderer-view';
 import { computed, obx } from '@recore/obx';
 import { RootSchema, NpmInfo } from '../../../designer/schema';
-import { isElement, getClientRects } from '../../../utils/dom';
+import { getClientRects } from '../../../utils/get-client-rects';
 import { Asset } from '../utils/asset';
 import loader from '../utils/loader';
 import { ComponentDescriptionSpec } from '../../../designer/component-config';
-import { findDOMNodes } from '../utils/react';
+import { reactFindDOMNodes } from '../utils/react-find-dom-nodes';
 import { isESModule } from '../../../utils/is-es-module';
 import { NodeInstance } from '../../../designer/simulator';
-
-let REACT_KEY = '';
-function cacheReactKey(el: Element): Element {
-  if (REACT_KEY !== '') {
-    return el;
-  }
-  REACT_KEY = Object.keys(el).find(key => key.startsWith('__reactInternalInstance$')) || '';
-  if (!REACT_KEY && (el as HTMLElement).parentElement) {
-    return cacheReactKey((el as HTMLElement).parentElement!);
-  }
-  return el;
-}
-
-const SYMBOL_VNID = Symbol('_LCNodeId');
-
-function getClosestNodeInstance(element: Element): NodeInstance | null {
-  let el: any = element;
-  if (el) {
-    el = cacheReactKey(el);
-  }
-  while (el) {
-    if (SYMBOL_VNID in el) {
-      return {
-        nodeId: el[SYMBOL_VNID],
-        instance: el,
-      };
-    }
-    // get fiberNode from element
-    if (el[REACT_KEY]) {
-      return getNodeInstance(el[REACT_KEY]);
-    }
-    el = el.parentElement;
-  }
-  return null;
-}
-
-function getNodeInstance(fiberNode: any): NodeInstance | null {
-  const instance = fiberNode.stateNode;
-  if (instance && SYMBOL_VNID in instance) {
-    return {
-      nodeId: instance[SYMBOL_VNID],
-      instance,
-    };
-  }
-  return getNodeInstance(fiberNode.return);
-}
-
-function checkInstanceMounted(instance: any): boolean {
-  if (isElement(instance)) {
-    return instance.parentElement != null;
-  }
-  return true;
-}
+import { isElement } from '../../../utils/is-element';
 
 export class SimulatorRenderer {
   readonly isSimulatorRenderer = true;
@@ -205,7 +153,7 @@ export class SimulatorRenderer {
   }
 
   findDOMNodes(instance: ReactInstance): Array<Element | Text> | null {
-    return findDOMNodes(instance);
+    return reactFindDOMNodes(instance);
   }
 
   getClientRects(element: Element | Text) {
@@ -297,4 +245,58 @@ function buildComponents(componentsMap: { [componentName: string]: ComponentDesc
   return components;
 }
 
+
+let REACT_KEY = '';
+function cacheReactKey(el: Element): Element {
+  if (REACT_KEY !== '') {
+    return el;
+  }
+  REACT_KEY = Object.keys(el).find(key => key.startsWith('__reactInternalInstance$')) || '';
+  if (!REACT_KEY && (el as HTMLElement).parentElement) {
+    return cacheReactKey((el as HTMLElement).parentElement!);
+  }
+  return el;
+}
+
+const SYMBOL_VNID = Symbol('_LCNodeId');
+
+function getClosestNodeInstance(element: Element): NodeInstance | null {
+  let el: any = element;
+  if (el) {
+    el = cacheReactKey(el);
+  }
+  while (el) {
+    if (SYMBOL_VNID in el) {
+      return {
+        nodeId: el[SYMBOL_VNID],
+        instance: el,
+      };
+    }
+    // get fiberNode from element
+    if (el[REACT_KEY]) {
+      return getNodeInstance(el[REACT_KEY]);
+    }
+    el = el.parentElement;
+  }
+  return null;
+}
+
+function getNodeInstance(fiberNode: any): NodeInstance | null {
+  const instance = fiberNode.stateNode;
+  if (instance && SYMBOL_VNID in instance) {
+    return {
+      nodeId: instance[SYMBOL_VNID],
+      instance,
+    };
+  }
+  return getNodeInstance(fiberNode.return);
+}
+
+function checkInstanceMounted(instance: any): boolean {
+  if (isElement(instance)) {
+    return instance.parentElement != null;
+  }
+  return true;
+}
+
 export default new SimulatorRenderer();
diff --git a/packages/designer/src/builtins/simulator/utils/asset.ts b/packages/designer/src/builtins/simulator/utils/asset.ts
index d419f66ac..36082de9e 100644
--- a/packages/designer/src/builtins/simulator/utils/asset.ts
+++ b/packages/designer/src/builtins/simulator/utils/asset.ts
@@ -57,10 +57,6 @@ export function isAssetBundle(obj: any): obj is AssetBundle {
   return obj && obj.type === AssetType.Bundle;
 }
 
-export function isCSSUrl(url: string): boolean {
-  return /\.css$/.test(url);
-}
-
 export function assetBundle(assets?: Asset | AssetList | null, level?: AssetLevel): AssetBundle | null {
   if (!assets) {
     return null;
diff --git a/packages/designer/src/utils/create-defer.ts b/packages/designer/src/builtins/simulator/utils/create-defer.ts
similarity index 100%
rename from packages/designer/src/utils/create-defer.ts
rename to packages/designer/src/builtins/simulator/utils/create-defer.ts
diff --git a/packages/designer/src/builtins/simulator/utils/loader.ts b/packages/designer/src/builtins/simulator/utils/loader.ts
index da321c26b..58fd31d82 100644
--- a/packages/designer/src/builtins/simulator/utils/loader.ts
+++ b/packages/designer/src/builtins/simulator/utils/loader.ts
@@ -1,6 +1,7 @@
 import { load, evaluate } from './script';
 import StylePoint from './style';
-import { Asset, AssetLevel, AssetLevels, AssetType, AssetList, isAssetBundle, isAssetItem, assetItem, isCSSUrl, AssetItem } from './asset';
+import { Asset, AssetLevel, AssetLevels, AssetType, AssetList, isAssetBundle, isAssetItem, assetItem, AssetItem } from './asset';
+import { isCSSUrl } from '../../../utils/is-css-url';
 
 function parseAssetList(scripts: any, styles: any, assets: AssetList, level?: AssetLevel) {
   for (let asset of assets) {
diff --git a/packages/designer/src/builtins/simulator/utils/react.ts b/packages/designer/src/builtins/simulator/utils/react-find-dom-nodes.ts
similarity index 78%
rename from packages/designer/src/builtins/simulator/utils/react.ts
rename to packages/designer/src/builtins/simulator/utils/react-find-dom-nodes.ts
index 3623c8e0d..f2bcf9664 100644
--- a/packages/designer/src/builtins/simulator/utils/react.ts
+++ b/packages/designer/src/builtins/simulator/utils/react-find-dom-nodes.ts
@@ -1,5 +1,6 @@
 import { ReactInstance } from 'react';
-import { isDOMNode, isElement } from '../../../utils/dom';
+import { isElement } from '../../../utils/is-element';
+import { isDOMNode } from '../../../utils/is-dom-node';
 
 const FIBER_KEY = '_reactInternalFiber';
 
@@ -18,7 +19,7 @@ function elementsFromFiber(fiber: any, elements: Array<Element | Text>) {
   }
 }
 
-export function findDOMNodes(elem: ReactInstance | null): Array<Element | Text> | null {
+export function reactFindDOMNodes(elem: ReactInstance | null): Array<Element | Text> | null {
   if (!elem) {
     return null;
   }
diff --git a/packages/designer/src/builtins/simulator/utils/script.ts b/packages/designer/src/builtins/simulator/utils/script.ts
index 97e1001aa..81841ff6d 100644
--- a/packages/designer/src/builtins/simulator/utils/script.ts
+++ b/packages/designer/src/builtins/simulator/utils/script.ts
@@ -1,4 +1,4 @@
-import { createDefer } from '../../../utils/create-defer';
+import { createDefer } from './create-defer';
 
 export function evaluate(script: string) {
   const scriptEl = document.createElement('script');
diff --git a/packages/designer/src/builtins/simulator/utils/style.ts b/packages/designer/src/builtins/simulator/utils/style.ts
index cd29c793a..74f4eddd4 100644
--- a/packages/designer/src/builtins/simulator/utils/style.ts
+++ b/packages/designer/src/builtins/simulator/utils/style.ts
@@ -1,4 +1,4 @@
-import { createDefer } from '../../../utils/create-defer';
+import { createDefer } from './create-defer';
 
 export default class StylePoint {
   private lastContent: string | undefined;
diff --git a/packages/designer/src/designer/designer.ts b/packages/designer/src/designer/designer.ts
index 31656d56d..9fcc34bf6 100644
--- a/packages/designer/src/designer/designer.ts
+++ b/packages/designer/src/designer/designer.ts
@@ -56,6 +56,7 @@ export default class Designer {
     });
 
     this.dragon.onDrag(e => {
+      console.info(e);
       if (this.props?.onDrag) {
         this.props.onDrag(e);
       }
diff --git a/packages/designer/src/designer/document/document-model.ts b/packages/designer/src/designer/document/document-model.ts
index 7e2076d17..72319414a 100644
--- a/packages/designer/src/designer/document/document-model.ts
+++ b/packages/designer/src/designer/document/document-model.ts
@@ -7,7 +7,7 @@ import { ISimulator, ComponentInstance, Component, NodeInstance } from '../simul
 import { computed, obx } from '@recore/obx';
 import Location from '../helper/location';
 import { ComponentConfig } from '../component-config';
-import { isElement } from '../../utils/dom';
+import { isElement } from '../../utils/is-element';
 
 export default class DocumentModel {
   /**
diff --git a/packages/designer/src/designer/helper/dragon.ts b/packages/designer/src/designer/helper/dragon.ts
index 4fe4ba5a0..bb8b17419 100644
--- a/packages/designer/src/designer/helper/dragon.ts
+++ b/packages/designer/src/designer/helper/dragon.ts
@@ -6,7 +6,7 @@ import { NodeData } from '../schema';
 import { ISimulator, isSimulator } from '../simulator';
 import Node from '../document/node/node';
 import Designer from '../designer';
-import { setNativeSelection } from '../../utils/navtive-selection';
+import { setNativeSelection } from './navtive-selection';
 import cursor from './cursor';
 
 export interface LocateEvent {
@@ -135,8 +135,22 @@ export function setShaken(e: any) {
   e.shaken = true;
 }
 
-function isFromTopDocument(e: MouseEvent) {
-  return e.view!.document === document;
+function getSourceSensor(dragObject: DragObject): ISimulator | null {
+  if (!isDragNodeObject(dragObject)) {
+    return null;
+  }
+  return dragObject.nodes[0]?.document.simulator || null;
+}
+
+function makeSimulatorListener(masterSensors: ISimulator[]): (fn: (sdoc: Document) => void) => void {
+  return (fn: (sdoc: Document) => void) => {
+    masterSensors.forEach(sim => {
+      const sdoc = sim.contentDocument;
+      if (sdoc) {
+        fn(sdoc);
+      }
+    });
+  };
 }
 
 export default class Dragon {
@@ -167,12 +181,12 @@ export default class Dragon {
       }
 
       // Get a new node to be dragged
-      const dragTarget = boost(e);
-      if (!dragTarget) {
+      const dragObject = boost(e);
+      if (!dragObject) {
         return;
       }
 
-      this.boost(dragTarget, e);
+      this.boost(dragObject, e);
     };
     shell.addEventListener('mousedown', mousedown as any);
     return () => {
@@ -180,24 +194,18 @@ export default class Dragon {
     };
   }
 
-  getMasterSensors(): ISimulator[] {
-    return this.designer.project.documents.map(doc => {
-      if (doc.actived && doc.simulator?.sensorAvailable) {
-        return doc.simulator;
-      }
-      return null;
-    }).filter(Boolean) as any;
-  }
-
   boost(dragObject: DragObject, boostEvent: MouseEvent) {
     const doc = document;
-    const isFromTop = isFromTopDocument(boostEvent);
+    const sourceDoc = boostEvent.view?.document;
     const masterSensors = this.getMasterSensors();
+    const listenSimulators = !sourceDoc || sourceDoc === doc ? makeSimulatorListener(masterSensors) : null;
+    const alwaysListen = listenSimulators ? doc : sourceDoc!;
     const designer = this.designer;
     const newBie = dragObject.type !== DragObjectType.Node;
     let lastSensor: ISensor | undefined;
 
     this._dragging = false;
+
     // 禁用默认的文稿拖选
     this.setNativeSelection(false);
 
@@ -216,10 +224,6 @@ export default class Dragon {
       }
     };
 
-    // period one fix:
-    // get evt source-sensor
-    // get globalX and globalY source-sensor
-
     const drag = (e: MouseEvent) => {
       checkcopy(e);
 
@@ -241,10 +245,12 @@ export default class Dragon {
       }
       this.setDraggingState(true);
       // ESC cancel drag
-      doc.addEventListener('keydown', checkesc, false);
-      if (isFromTop) {
-        // topDoc.addEventListener('keydown', checkesc, false);
-      }
+      alwaysListen.addEventListener('keydown', checkesc, false);
+      listenSimulators &&
+        listenSimulators(sdoc => {
+          sdoc.addEventListener('keydown', checkesc, false);
+        });
+
       this.emitter.emit('dragstart', locateEvent);
     };
 
@@ -281,26 +287,21 @@ export default class Dragon {
 
       this.clearState();
 
-      if (isFromTop) {
-        doc.removeEventListener('mousemove', move, true);
-        doc.removeEventListener('mouseup', over, true);
-        doc.removeEventListener('mousedown', over, true);
-        doc.removeEventListener('keydown', checkesc, false);
-        doc.removeEventListener('keydown', checkcopy as any, false);
-        doc.removeEventListener('keyup', checkcopy as any, false);
-      } else {
-        masterSensors.forEach(item => {
-          const odoc = item.contentDocument;
-          if (odoc) {
-            odoc.removeEventListener('mousemove', move, true);
-            odoc.removeEventListener('mouseup', over, true);
-            odoc.removeEventListener('mousedown', over, true);
-            odoc.removeEventListener('keydown', checkesc, false);
-            odoc.removeEventListener('keydown', checkcopy as any, false);
-            odoc.removeEventListener('keyup', checkcopy as any, false);
-          }
+      alwaysListen.removeEventListener('mousemove', move, true);
+      alwaysListen.removeEventListener('mouseup', over, true);
+      alwaysListen.removeEventListener('mousedown', over, true);
+      alwaysListen.removeEventListener('keydown', checkesc, false);
+      alwaysListen.removeEventListener('keydown', checkcopy as any, false);
+      alwaysListen.removeEventListener('keyup', checkcopy as any, false);
+      listenSimulators &&
+        listenSimulators(sdoc => {
+          sdoc.removeEventListener('mousemove', move, true);
+          sdoc.removeEventListener('mouseup', over, true);
+          sdoc.removeEventListener('mousedown', over, true);
+          sdoc.removeEventListener('keydown', checkesc, false);
+          sdoc.removeEventListener('keydown', checkcopy as any, false);
+          sdoc.removeEventListener('keyup', checkcopy as any, false);
         });
-      }
       if (exception) {
         throw exception;
       }
@@ -348,13 +349,6 @@ export default class Dragon {
       return evt;
     };
 
-    function getSourceSensor(dragObject: DragObject): ISimulator | null {
-      if (!isDragNodeObject(dragObject)) {
-        return null;
-      }
-      return dragObject.nodes[0]?.document.simulator || null;
-    }
-
     const sourceSensor = getSourceSensor(dragObject);
     const sensors: ISensor[] = (masterSensors as ISensor[]).concat(this.sensors);
     const chooseSensor = (e: LocateEvent) => {
@@ -380,27 +374,42 @@ export default class Dragon {
       return sensor;
     };
 
-    doc.addEventListener('mousemove', move, true);
-    doc.addEventListener('mouseup', over, true);
-    doc.addEventListener('mousedown', over, true);
-    if (isFromTop) {/*
-      topDoc.addEventListener('mousemove', move, true);
-      topDoc.addEventListener('mouseup', over, true);
-      topDoc.addEventListener('mousedown', over, true);
-      */
-    }
+    alwaysListen.addEventListener('mousemove', move, true);
+    alwaysListen.addEventListener('mouseup', over, true);
+    alwaysListen.addEventListener('mousedown', over, true);
+    listenSimulators &&
+      listenSimulators(sdoc => {
+        // alwaysListen = global document
+        // listen others simulator iframe
+        sdoc.addEventListener('mousemove', move, true);
+        sdoc.addEventListener('mouseup', over, true);
+        sdoc.addEventListener('mousedown', over, true);
+      });
+
+    // future think: drag things from browser-out or a iframe-pane
 
     if (!newBie) {
-      doc.addEventListener('keydown', checkcopy as any, false);
-      doc.addEventListener('keyup', checkcopy as any, false);
-      if (isFromTop) {/*
-        topDoc.addEventListener('keydown', checkcopy as any, false);
-        topDoc.addEventListener('keyup', checkcopy as any, false);
-        */
-      }
+      alwaysListen.addEventListener('keydown', checkcopy as any, false);
+      alwaysListen.addEventListener('keyup', checkcopy as any, false);
+      listenSimulators &&
+        listenSimulators(sdoc => {
+          sdoc.addEventListener('keydown', checkcopy as any, false);
+          sdoc.addEventListener('keyup', checkcopy as any, false);
+        });
     }
   }
 
+  private getMasterSensors(): ISimulator[] {
+    return this.designer.project.documents
+      .map(doc => {
+        if (doc.actived && doc.simulator?.sensorAvailable) {
+          return doc.simulator;
+        }
+        return null;
+      })
+      .filter(Boolean) as any;
+  }
+
   // #region ======== drag and drop helpers ============
   private setNativeSelection(enableFlag: boolean) {
     setNativeSelection(enableFlag);
@@ -447,7 +456,6 @@ export default class Dragon {
   }
   // #endregion
 
-
   /**
    * 添加投放感应区
    */
diff --git a/packages/designer/src/utils/hotkey.ts b/packages/designer/src/designer/helper/hotkey.ts
similarity index 100%
rename from packages/designer/src/utils/hotkey.ts
rename to packages/designer/src/designer/helper/hotkey.ts
diff --git a/packages/designer/src/utils/navtive-selection.ts b/packages/designer/src/designer/helper/navtive-selection.ts
similarity index 100%
rename from packages/designer/src/utils/navtive-selection.ts
rename to packages/designer/src/designer/helper/navtive-selection.ts
diff --git a/packages/designer/src/designer/helper/scroller.ts b/packages/designer/src/designer/helper/scroller.ts
index ecef91f4b..a901ab10b 100644
--- a/packages/designer/src/designer/helper/scroller.ts
+++ b/packages/designer/src/designer/helper/scroller.ts
@@ -1,4 +1,4 @@
-import { isElement } from '../../utils/dom';
+import { isElement } from '../../utils/is-element';
 
 export class ScrollTarget {
   get left() {
diff --git a/packages/designer/src/utils/dom.ts b/packages/designer/src/utils/get-client-rects.ts
similarity index 52%
rename from packages/designer/src/utils/dom.ts
rename to packages/designer/src/utils/get-client-rects.ts
index f723945d0..1629b20c9 100644
--- a/packages/designer/src/utils/dom.ts
+++ b/packages/designer/src/utils/get-client-rects.ts
@@ -1,10 +1,4 @@
-export function isDOMNode(node: any): node is Element | Text {
-  return node.nodeType && (node.nodeType === Node.ELEMENT_NODE || node.nodeType === Node.TEXT_NODE);
-}
-
-export function isElement(node: any): node is Element {
-  return node.nodeType === Node.ELEMENT_NODE;
-}
+import { isElement } from './is-element';
 
 // a range for test TextNode clientRect
 const cycleRange = document.createRange();
diff --git a/packages/designer/src/utils/is-dom-node.ts b/packages/designer/src/utils/is-dom-node.ts
new file mode 100644
index 000000000..1d84eaa02
--- /dev/null
+++ b/packages/designer/src/utils/is-dom-node.ts
@@ -0,0 +1,3 @@
+export function isDOMNode(node: any): node is Element | Text {
+  return node.nodeType && (node.nodeType === Node.ELEMENT_NODE || node.nodeType === Node.TEXT_NODE);
+}
diff --git a/packages/designer/src/utils/is-element.ts b/packages/designer/src/utils/is-element.ts
new file mode 100644
index 000000000..7cb030814
--- /dev/null
+++ b/packages/designer/src/utils/is-element.ts
@@ -0,0 +1,3 @@
+export function isElement(node: any): node is Element {
+  return node.nodeType === Node.ELEMENT_NODE;
+}