diff --git a/components/drawer/style/drawer.less b/components/drawer/style/drawer.less
index d21b5489e79e5ab706d147479d402564a698c80d..d6b6794dcc63e9d922fa344558a0f3fca0b973ef 100644
--- a/components/drawer/style/drawer.less
+++ b/components/drawer/style/drawer.less
@@ -8,7 +8,7 @@
   width: 100%;
   height: 100%;
   pointer-events: none;
-  z-index: 99999;
+  z-index: @zindex-modal;
   transition: transform .3s @ease-in-out-circ;
   >* {
     transition: transform .3s @ease-in-out-circ;