diff --git a/packages/design/src/components/select/index.module.less b/packages/design/src/components/select/index.module.less
index 6c6ace0b7c..55b2d149d1 100644
--- a/packages/design/src/components/select/index.module.less
+++ b/packages/design/src/components/select/index.module.less
@@ -232,7 +232,6 @@
         border: 1px solid rgb(var(--border-color));
         border-radius: var(--border-radius-base);
         box-shadow: var(--box-shadow-base);
-        z-index: 100;
         &-hidden {
             display: none;
         }