diff --git a/components/date-picker/style/index.less b/components/date-picker/style/index.less
index 9f694329e6..b73dfbb9e9 100644
--- a/components/date-picker/style/index.less
+++ b/components/date-picker/style/index.less
@@ -160,7 +160,7 @@
   &-dropdown {
     .reset-component;
     position: absolute;
-    z-index: @zindex-picker-panel;
+    z-index: @zindex-picker;
 
     &-hidden {
       display: none;