diff --git a/src/model/ModelUtils.ts b/src/model/ModelUtils.ts
index c01645c..c73e089 100644
--- a/src/model/ModelUtils.ts
+++ b/src/model/ModelUtils.ts
@@ -3,6 +3,7 @@ import type { ItemJson } from '@/model/itemTypeDefine/ItemTypeDefine.ts'
 import { getAllItemTypes, getItemTypeByName } from '@/runtime/DefineItemType.ts'
 
 export function loadSceneFromJson(scene: THREE.Scene, items: ItemJson[]) {
+  console.time('loadSceneFromJson')
   const object3ds = loadObject3DFromJson(items)
 
   // 通知所有加载的对象, 模型加载完成
@@ -20,6 +21,9 @@ export function loadSceneFromJson(scene: THREE.Scene, items: ItemJson[]) {
   getAllItemTypes().forEach(itemType => {
     itemType.clazz.afterAddScene(scene, object3ds)
   })
+
+  console.log('loadSceneFromJson:', items.length, 'items,', object3ds.length, 'objects')
+  console.timeEnd('loadSceneFromJson')
 }
 
 function loadObject3DFromJson(items: ItemJson[]): THREE.Object3D[] {
diff --git a/src/model/WorldModel.ts b/src/model/WorldModel.ts
index 2df41bd..931470e 100644
--- a/src/model/WorldModel.ts
+++ b/src/model/WorldModel.ts
@@ -18,14 +18,10 @@ export default class WorldModel {
   viewPorts: Viewport[] = []
 
   constructor() {
-    this.init()
-    this.open()
   }
 
   init() {
-    window['worldModel'] = this
-
-    Promise.all([
+    return Promise.all([
       MeasureMeta.clazz.init(this)
 
     ]).then(() => {
diff --git a/src/model/itemTypeDefine/ItemTypeLineBase.ts b/src/model/itemTypeDefine/ItemTypeLineBase.ts
index fa1c074..b1a8618 100644
--- a/src/model/itemTypeDefine/ItemTypeLineBase.ts
+++ b/src/model/itemTypeDefine/ItemTypeLineBase.ts
@@ -60,14 +60,13 @@ export default abstract class ItemTypeLineBase extends ItemTypeBase {
         const geom = line.geometry
         geom.setFromPoints([startPoint.position, endPoint.position])
 
-        this.afterLoadLine(line)
-
         if (startPoint.parent) {
           startPoint.parent.add(line)
         } else {
           scene.add(line)
         }
 
+        this.afterLoadLine(line)
         this.linkArray.push(line)
       }
     }
diff --git a/src/views/ModelMainInit.ts b/src/views/ModelMainInit.ts
index 15e00f7..be317b4 100644
--- a/src/views/ModelMainInit.ts
+++ b/src/views/ModelMainInit.ts
@@ -35,7 +35,12 @@ export function ModelMainInit() {
   ToolsMenu.install()
   Model3DView.install()
 
-  new WorldModel().init()
+  const worldModel = new WorldModel()
+  window['worldModel'] = worldModel
+
+  worldModel.init().then(() => {
+    worldModel.open()
+  })
 }
 
 export function ModelMainMounted() {