diff --git a/components/input/style/allow-clear.less b/components/input/style/allow-clear.less
index 98a181a534..6cd685692f 100644
--- a/components/input/style/allow-clear.less
+++ b/components/input/style/allow-clear.less
@@ -47,5 +47,6 @@
   position: absolute;
   top: 0;
   right: 0;
+  z-index: 1;
   margin: 8px 8px 0 0;
 }