diff --git a/src/babylonjs/AppDropZone.ts b/src/babylonjs/AppDropZone.ts
index 4602473..a351de6 100644
--- a/src/babylonjs/AppDropZone.ts
+++ b/src/babylonjs/AppDropZone.ts
@@ -506,6 +506,8 @@ export class AppDropZone {
    */
   show(): void {
     this.placementWall.show();
+    // 禁用所有已放置模型的拾取
+    this.setModelsPickable(false);
   }
 
   /**
@@ -514,6 +516,8 @@ export class AppDropZone {
    */
   showWall(wallName: string): void {
     this.placementWall.showWall(wallName);
+    // 禁用所有已放置模型的拾取
+    this.setModelsPickable(false);
   }
 
   /**
@@ -521,6 +525,25 @@ export class AppDropZone {
    */
   hide(): void {
     this.placementWall.hide();
+    // 恢复所有已放置模型的拾取
+    this.setModelsPickable(true);
+  }
+
+  /**
+   * 设置所有已放置模型的可拾取状态
+   * @param pickable 是否可拾取
+   */
+  private setModelsPickable(pickable: boolean): void {
+    if (!this.appModel) return;
+
+    this.zoneModelMap.forEach((modelId) => {
+      const meshes = this.appModel!.getCachedMeshes(modelId);
+      if (meshes && meshes.length > 0) {
+        meshes.forEach(mesh => {
+          mesh.isPickable = pickable;
+        });
+      }
+    });
   }
 
   /**
diff --git a/src/babylonjs/AppModelDrag.ts b/src/babylonjs/AppModelDrag.ts
index 4977510..7aebaeb 100644
--- a/src/babylonjs/AppModelDrag.ts
+++ b/src/babylonjs/AppModelDrag.ts
@@ -114,37 +114,73 @@ export class AppModelDrag extends Monobehiver {
         // 使用世界坐标系而不是物体本地坐标系
         pointerDragBehavior.useObjectOrientationForDragging = false;
 
+        // 记录拖拽起始位置和状态
+        let dragStartPosition: Vector3 | null = null;
+        let hasShownZones = false; // 是否已显示分割区域
+
         // 监听拖拽开始事件
         pointerDragBehavior.onDragStartObservable.add(() => {
+            // 记录起始位置
+            const meshes = this.mainApp.appModel?.modelDic?.Get(modelId);
+            if (meshes && meshes.length > 0) {
+                dragStartPosition = meshes[0].position.clone();
+            }
+
             // 禁用相机控制
             this.disableCameraControl();
 
-            // 如果启用了拖拽吸附，显示分割区域
-            if (dragInfo.config.snapToZone) {
-                this.showZonesForModel(modelId);
+            // 不在这里显示分割区域，等到实际拖动时再显示
+            hasShownZones = false;
+        });
+
+        // 监听拖拽中事件（用于边界限制和延迟显示分割区域）
+        pointerDragBehavior.onDragObservable.add((event) => {
+            // 检查是否实际移动了
+            const meshes = this.mainApp.appModel?.modelDic?.Get(modelId);
+            if (meshes && meshes.length > 0 && dragStartPosition) {
+                const distance = Vector3.Distance(dragStartPosition, meshes[0].position);
+
+                // 如果移动距离超过阈值且还没显示分割区域，则显示
+                if (distance > 0.01 && !hasShownZones && dragInfo.config.snapToZone) {
+                    this.showZonesForModel(modelId);
+                    hasShownZones = true;
+                }
+            }
+
+            // 应用边界限制
+            if (dragInfo.config.boundaryConstraint) {
+                this.applyBoundaryConstraint(modelId, event.dragPlanePoint);
             }
         });
 
-        // 监听拖拽中事件（用于边界限制）
-        if (dragInfo.config.boundaryConstraint) {
-            pointerDragBehavior.onDragObservable.add((event) => {
-                this.applyBoundaryConstraint(modelId, event.dragPlanePoint);
-            });
-        }
-
         // 监听拖拽结束事件
         pointerDragBehavior.onDragEndObservable.add(() => {
+            // 检查是否实际移动了
+            const meshes = this.mainApp.appModel?.modelDic?.Get(modelId);
+            let hasMoved = false;
+            if (meshes && meshes.length > 0 && dragStartPosition) {
+                const distance = Vector3.Distance(dragStartPosition, meshes[0].position);
+                hasMoved = distance > 0.01; // 移动距离大于 0.01 才算拖拽
+            }
+
             // 恢复相机控制
             this.enableCameraControl();
 
-            // 如果启用了拖拽吸附，隐藏分割区域并吸附到最近区域
-            if (dragInfo.config.snapToZone) {
-                this.hideZonesForModel(modelId);
-                this.snapModelToZone(modelId);
-            } else {
-                // 否则只更新映射关系
-                this.updateModelZoneMapping(modelId);
+            // 只有在实际移动的情况下才执行拖拽逻辑
+            if (hasMoved) {
+                // 如果启用了拖拽吸附，隐藏分割区域并吸附到最近区域
+                if (dragInfo.config.snapToZone && hasShownZones) {
+                    this.hideZonesForModel(modelId);
+                    this.snapModelToZone(modelId);
+                } else {
+                    // 否则只更新映射关系
+                    this.updateModelZoneMapping(modelId);
+                }
             }
+
+            // 清除状态
+            dragStartPosition = null;
+            hasShownZones = false;
         });
 
         return pointerDragBehavior;
diff --git a/src/babylonjs/AppRay.ts b/src/babylonjs/AppRay.ts
index 2f63fc8..bcc5933 100644
--- a/src/babylonjs/AppRay.ts
+++ b/src/babylonjs/AppRay.ts
@@ -21,6 +21,11 @@ class AppRay extends Monobehiver {
   private highlightLayer: HighlightLayer | null = null
   private originalMaterial: any = null
   private highlightedMesh: AbstractMesh | null = null
+  private pointerDownTime: number = 0
+  private pointerDownPickInfo: PickingInfo | null = null
+  private longPressTimer: any = null
+  private longPressThreshold: number = 500 // 长按阈值（毫秒）
+  private isLongPress: boolean = false
 
   constructor(mainApp: MainApp) {
     super(mainApp)
@@ -58,18 +63,91 @@ class AppRay extends Monobehiver {
 
       if (type === PointerEventTypes.POINTERDOWN) {
         this.oldPoint.set(pointerEvent.clientX, 0, pointerEvent.clientY);
+        this.pointerDownTime = Date.now();
+        this.pointerDownPickInfo = pickInfo;
+        this.isLongPress = false;
+
+        // 清除之前的定时器
+        if (this.longPressTimer) {
+          clearTimeout(this.longPressTimer);
+        }
+
+        // 设置长按定时器
+        this.longPressTimer = setTimeout(() => {
+          this.isLongPress = true;
+          this.handleLongPress(pointerEvent, this.pointerDownPickInfo);
+        }, this.longPressThreshold);
+
       } else if (type === PointerEventTypes.POINTERUP) {
+        // 清除长按定时器
+        if (this.longPressTimer) {
+          clearTimeout(this.longPressTimer);
+          this.longPressTimer = null;
+        }
+
         this.newPoint.set(pointerEvent.clientX, 0, pointerEvent.clientY);
         const distance = Vector3.Distance(this.oldPoint, this.newPoint);
 
-        // 只有在没有移动的情况下才处理单击
-        if (distance < 5) { // 增加一些容差
+        // 只有在没有移动且不是长按的情况下才处理单击
+        if (distance < 5 && !this.isLongPress) {
           this.handleSingleClick(pointerEvent, pickInfo);
         }
+
+        this.isLongPress = false;
+      } else if (type === PointerEventTypes.POINTERMOVE) {
+        // 如果移动了，取消长按
+        this.newPoint.set(pointerEvent.clientX, 0, pointerEvent.clientY);
+        const distance = Vector3.Distance(this.oldPoint, this.newPoint);
+        if (distance > 5 && this.longPressTimer) {
+          clearTimeout(this.longPressTimer);
+          this.longPressTimer = null;
+        }
       }
     });
   }
 
+  // 处理长按
+  handleLongPress(evt: IPointerEvent, pickInfo: PickingInfo | null) {
+    if (pickInfo && pickInfo.hit && pickInfo.pickedMesh) {
+      // 检查是否长按的是模型（不是放置区域、不是热点）
+      if (pickInfo.pickedMesh.metadata?.type === 'hotspot') {
+        return;
+      }
+
+      if (pickInfo.pickedMesh.name.startsWith('placement_')) {
+        return;
+      }
+
+      // 获取模型名称
+      const modelName = this.mainApp.appModel.findModelNameByMesh(pickInfo.pickedMesh);
+      if (modelName) {
+        // 通过模型找到它所在的墙面
+        const wallName = this.findModelWallName(modelName);
+        if (wallName) {
+          console.log(`[长按] 模型 ${modelName} 位于墙面 ${wallName}，显示该墙面的放置区域`);
+          this.mainApp.appDropZone.showWall(wallName);
+        }
+      }
+    }
+  }
+
+  // 查找模型所在的墙面
+  private findModelWallName(modelId: string): string | null {
+    const zoneModelMap = this.mainApp.appDropZone['zoneModelMap'] as Map<string, string>;
+    if (!zoneModelMap) return null;
+
+    for (const [zoneKey, id] of zoneModelMap.entries()) {
+      if (id === modelId) {
+        // zoneKey 格式为 "wallName[index]"
+        const match = zoneKey.match(/^(.+)\[(\d+)\]$/);
+        if (match) {
+          return match[1];
+        }
+      }
+    }
+    return null;
+  }
+
   // 处理单击
   handleSingleClick(evt: IPointerEvent, pickInfo: PickingInfo | null) {
     // 先尝试热点（mesh 热点 / sprite 热点）
@@ -93,7 +171,7 @@ class AppRay extends Monobehiver {
         const clickedZone = zones.find(zone => zone.mesh === pickInfo.pickedMesh);
         if (clickedZone) {
           // 计算该放置区域的目标位置和旋转
-          const offsetDistance = 0; // 增加偏移距离，让模型更往外
+          const offsetDistance = 0;
           const targetPosition = clickedZone.center.add(clickedZone.normal.scale(offsetDistance));
           const targetDirection = clickedZone.normal.scale(-1);
           const angle = Math.atan2(targetDirection.x, targetDirection.z);
@@ -114,7 +192,7 @@ class AppRay extends Monobehiver {
               },
               rotation: {
                 x: 0,
-                y: angle * 180 / Math.PI,  // 转换为角度
+                y: angle * 180 / Math.PI,
                 z: 0
               },
               scale: {
@@ -130,6 +208,9 @@ class AppRay extends Monobehiver {
 
       this.mainApp.appDomTo3D.hideAll()
 
+      // 隐藏放置区域，避免遮挡配件模型的点击
+      this.mainApp.appDropZone.hide();
+
       const materialName = pickInfo.pickedMesh.material?.name || '';
       const holdingShift = Boolean((evt as any).shiftKey);
       const modelMeshes = this.mainApp.appModel.getModelMeshesByMesh(pickInfo.pickedMesh);