diff --git a/src/core/platform/web/dom.js b/src/core/platform/web/dom.js
index cc9ed0f8d..66f4b3651 100644
--- a/src/core/platform/web/dom.js
+++ b/src/core/platform/web/dom.js
@@ -745,13 +745,14 @@
          * 获取position:fixed相对定位的元素的clientRect
          */
         getPositionRelativeContainingBlockRect: function (element) {
-            var positionRelativeElement = BI.DOM.getPositionRelativeContainingBlock(element);
-            var rect = positionRelativeElement.getBoundingClientRect();
+            const positionRelativeElement = BI.DOM.getPositionRelativeContainingBlock(element);
+            const { top, right, bottom, left, width, height, x, y } = positionRelativeElement.getBoundingClientRect();
+
 
             return {
-                ...rect.toJSON(),
-                scaleX: rect.width / positionRelativeElement.offsetWidth,
-                scaleY: rect.height / positionRelativeElement.offsetHeight
+                top, right, bottom, left, width, height, x, y,
+                scaleX: width / positionRelativeElement.offsetWidth,
+                scaleY: height / positionRelativeElement.offsetHeight,
             };
         },
     });