diff --git a/packages/amis-editor-core/src/layout/flex.ts b/packages/amis-editor-core/src/layout/flex.ts
index 90f39b51d60..799ecd92239 100644
--- a/packages/amis-editor-core/src/layout/flex.ts
+++ b/packages/amis-editor-core/src/layout/flex.ts
@@ -59,12 +59,11 @@ export default class FlexLayout implements LayoutInterface {
       }
       if (position === 'left') {
         row = beforeRow;
-      }
-      if (position === 'right') {
+      } else if (position === 'right') {
         row = preRow;
-      }
-
-      if (position === 'bottom' || position === 'top') {
+      } else if (position === 'top') {
+        row = preRow + 1 || 0; // 如果往第一个元素上边插入，preRow为undefined，所以设置0
+      } else if (position === 'bottom') {
         row = preRow + 1;
       }
     }