diff --git a/packages/components/select-v2/src/useSelect.ts b/packages/components/select-v2/src/useSelect.ts
index 5918bf6314..4b09b00777 100644
--- a/packages/components/select-v2/src/useSelect.ts
+++ b/packages/components/select-v2/src/useSelect.ts
@@ -533,7 +533,9 @@ const useSelect = (props: ISelectV2Props, emit: SelectEmitFn) => {
   }
 
   const resetSelectionWidth = () => {
-    states.selectionWidth = selectionRef.value!.getBoundingClientRect().width
+    states.selectionWidth = Number.parseFloat(
+      window.getComputedStyle(selectionRef.value!).width
+    )
   }
 
   const resetCollapseItemWidth = () => {
diff --git a/packages/components/select/src/useSelect.ts b/packages/components/select/src/useSelect.ts
index 77318fb62d..c48efa814c 100644
--- a/packages/components/select/src/useSelect.ts
+++ b/packages/components/select/src/useSelect.ts
@@ -454,7 +454,9 @@ export const useSelect = (props: ISelectProps, emit: SelectEmits) => {
   }
 
   const resetSelectionWidth = () => {
-    states.selectionWidth = selectionRef.value!.getBoundingClientRect().width
+    states.selectionWidth = Number.parseFloat(
+      window.getComputedStyle(selectionRef.value!).width
+    )
   }
 
   const resetCollapseItemWidth = () => {