diff --git a/index.html b/index.html
index 9c27841..5614f4b 100644
--- a/index.html
+++ b/index.html
@@ -338,6 +338,7 @@
                         <button class="option-btn" data-option="louver-3">3m下拉帘</button>
                         <button class="option-btn" data-option="louver-4">SPFSW13FTC</button>
                         <button class="option-btn" data-option="louver-4">SPFSW10FTW</button>
+                        <button class="option-btn" data-option="louver-4">SPFSW10FTC</button>
                     </div>
                 </div>
             </div>
diff --git a/index.js b/index.js
index a897874..5ea4668 100644
--- a/index.js
+++ b/index.js
@@ -214,13 +214,14 @@ export const executeEvent2 = async (result) => {
             console.log(`检查模型 ${name + '_' + category} 是否存在:`, modelAlreadyExists);
         }
     }
-    kernel.dropZone.clearZones();
+  
     // 只有在需要更换模型且模型不存在时才清除
     if (hasModelChange && !modelAlreadyExists) {
         console.log('模型不存在，执行清除操作');
 
          kernel.model.removeAll();
     } else if (modelAlreadyExists) {
+          kernel.dropZone.hide();
         console.log('模型已存在，跳过清除操作，仅更新材质');
     }
 
diff --git a/src/babylonjs/AppDropZone.ts b/src/babylonjs/AppDropZone.ts
index 52f0e47..0a642b3 100644
--- a/src/babylonjs/AppDropZone.ts
+++ b/src/babylonjs/AppDropZone.ts
@@ -31,6 +31,8 @@ export class AppDropZone {
 
   // 存储放置区域配置数据
   private dropZoneConfig: DropZoneConfig | null = null;
+  // 存储原始墙面配置（用于 updateDivisions 时恢复完整墙面列表）
+  private originalWalls: WallConfig[] = [];
 
   constructor(scene: Scene) {
     this.scene = scene;
@@ -50,6 +52,8 @@ export class AppDropZone {
    */
   setData(config: DropZoneConfig): void {
     this.dropZoneConfig = config;
+    // 保存原始墙面配置的深拷贝
+    this.originalWalls = config.walls.map(wall => ({ ...wall }));
   }
 
   /**
@@ -145,8 +149,8 @@ export class AppDropZone {
       return null;
     };
 
-    // 更新配置中的墙面分割数，只保留后端配置的墙面
-    this.dropZoneConfig.walls = this.dropZoneConfig.walls
+    // 更新配置中的墙面分割数，从原始配置中恢复墙面列表
+    this.dropZoneConfig.walls = this.originalWalls
       .map(wall => {
         const newDivisions = matchWallName(wall.name);