diff --git a/packages/designer/src/builtin-simulator/host.less b/packages/designer/src/builtin-simulator/host.less
index c51cd5d67..d7c878a64 100644
--- a/packages/designer/src/builtin-simulator/host.less
+++ b/packages/designer/src/builtin-simulator/host.less
@@ -29,6 +29,38 @@
     box-shadow: 0 2px 10px 0 rgba(31,56,88,.15);
   }
 
+  // &-device-mobile {
+  //   left: 50%;
+  //   width: 378px;
+  //   transform: translateX(-50%);
+  //   background: url(https://img.alicdn.com/tfs/TB1b4DHilFR4u4jSZFPXXanzFXa-750-1574.png) no-repeat top;
+  //   background-size: 378px 812px;
+  //   top: 8px;
+  //   .@{scope}-canvas-viewport {
+  //     width: auto;
+  //     top: 90px;
+  //     left: 0px;
+  //     right: 0px;
+  //     max-height: 688px;
+  //   }
+  // }
+
+  &-device-miniapp { // 增加默认的小程序的壳
+    left: 50%;
+    width: 378px;
+    transform: translateX(-50%);
+    background: url(https://img.alicdn.com/tfs/TB1b4DHilFR4u4jSZFPXXanzFXa-750-1574.png) no-repeat top;
+    background-size: 378px 812px;
+    top: 8px;
+    .@{scope}-canvas-viewport {
+      width: auto;
+      top: 90px;
+      left: 0px;
+      right: 0px;
+      max-height: 688px;
+    }
+  }
+
   &-device-iphone6 {
     left: 50%;
     width: 378px;