diff --git a/components/drawer/style/drawer.less b/components/drawer/style/drawer.less
index 942fa7a6da..93f251a745 100644
--- a/components/drawer/style/drawer.less
+++ b/components/drawer/style/drawer.less
@@ -40,28 +40,28 @@
     }
 
     // Placement
-    .@{drawer-prefix-cls}-left & {
+    .@{drawer-prefix-cls}-left > & {
       top: 0;
       bottom: 0;
       left: 0;
       box-shadow: @shadow-1-right;
     }
 
-    .@{drawer-prefix-cls}-right & {
+    .@{drawer-prefix-cls}-right > & {
       top: 0;
       right: 0;
       bottom: 0;
       box-shadow: @shadow-1-left;
     }
 
-    .@{drawer-prefix-cls}-top & {
+    .@{drawer-prefix-cls}-top > & {
       top: 0;
       right: 0;
       left: 0;
       box-shadow: @shadow-1-down;
     }
 
-    .@{drawer-prefix-cls}-bottom & {
+    .@{drawer-prefix-cls}-bottom > & {
       right: 0;
       bottom: 0;
       left: 0;