diff --git a/packages/dropdown/src/dropdown.vue b/packages/dropdown/src/dropdown.vue
index 5eda11441..b6ff32a6d 100644
--- a/packages/dropdown/src/dropdown.vue
+++ b/packages/dropdown/src/dropdown.vue
@@ -94,7 +94,7 @@
             <el-button type={type} size={size} nativeOn-click={handleClick}>
               {this.$slots.default}
             </el-button>
-            <el-button ref="trigger" type={type} size={size} class="el-dropdown__icon-button">
+            <el-button ref="trigger" type={type} size={size} class="el-dropdown__caret-button">
               <i class="el-dropdown__icon el-icon-caret-bottom"></i>
             </el-button>
           </el-button-group>);
diff --git a/packages/theme-default/src/dropdown.css b/packages/theme-default/src/dropdown.css
index 5610dc9b6..f42b6f7ce 100644
--- a/packages/theme-default/src/dropdown.css
+++ b/packages/theme-default/src/dropdown.css
@@ -45,7 +45,7 @@
         }
       }
     }
-    @e icon-button {
+    & .el-dropdown__caret-button {
       padding: * 5px;
 
       & .el-dropdown__icon {