diff --git a/data-room-ui/packages/BizComponent/Preview.vue b/data-room-ui/packages/BizComponent/Preview.vue
index a7657734..a3d3ab82 100644
--- a/data-room-ui/packages/BizComponent/Preview.vue
+++ b/data-room-ui/packages/BizComponent/Preview.vue
@@ -193,7 +193,7 @@ export default {
 
   .remote-preview-inner-wrap {
     position: absolute;
-    // height: 100%;
+    height: calc(100% - 40px);
     width: 100%;
     overflow: auto;
     padding: 20px;