diff --git a/packages/fineui/src/case/ztree/asynctree.js b/packages/fineui/src/case/ztree/asynctree.js
index 7921ef821..7c6efe09c 100644
--- a/packages/fineui/src/case/ztree/asynctree.js
+++ b/packages/fineui/src/case/ztree/asynctree.js
@@ -221,15 +221,11 @@ export class AsyncTree extends TreeView {
                     {
                         el: {
                             type: IconLabel.xtype,
-                            width: 20,
-                            height: 20,
                             cls: "button-loading-font anim-rotate bi-card",
                             ref: ref => {
                                 loadingIcon = ref;
                             },
                         },
-                        left: 5,
-                        top: 5,
                     },
                 ],
             });
diff --git a/packages/fineui/src/less/base/tree/ztree.less b/packages/fineui/src/less/base/tree/ztree.less
index e7869baae..4932e49ef 100644
--- a/packages/fineui/src/less/base/tree/ztree.less
+++ b/packages/fineui/src/less/base/tree/ztree.less
@@ -335,3 +335,10 @@
   margin-right: 2px;
   vertical-align: top;
 }
+
+.ztree .button-loading-font {
+  .use-scale(width, 20px);
+  .use-scale(height, 20px);
+  .use-scale(left, 5px);
+  .use-scale(top, 5px);
+}
\ No newline at end of file