diff --git a/packages/vant/src/button/index.less b/packages/vant/src/button/index.less
index 3babf50b6..6133ac538 100644
--- a/packages/vant/src/button/index.less
+++ b/packages/vant/src/button/index.less
@@ -58,7 +58,7 @@
     left: 50%;
     width: 100%;
     height: 100%;
-    background-color: var(--van-black);
+    background: var(--van-black);
     border: inherit;
     border-color: var(--van-black);
     border-radius: inherit; /* inherit parent's border radius */
@@ -80,41 +80,41 @@
 
   &--default {
     color: var(--van-button-default-color);
-    background-color: var(--van-button-default-background-color);
+    background: var(--van-button-default-background-color);
     border: var(--van-button-border-width) solid
       var(--van-button-default-border-color);
   }
 
   &--primary {
     color: var(--van-button-primary-color);
-    background-color: var(--van-button-primary-background-color);
+    background: var(--van-button-primary-background-color);
     border: var(--van-button-border-width) solid
       var(--van-button-primary-border-color);
   }
 
   &--success {
     color: var(--van-button-success-color);
-    background-color: var(--van-button-success-background-color);
+    background: var(--van-button-success-background-color);
     border: var(--van-button-border-width) solid
       var(--van-button-success-border-color);
   }
 
   &--danger {
     color: var(--van-button-danger-color);
-    background-color: var(--van-button-danger-background-color);
+    background: var(--van-button-danger-background-color);
     border: var(--van-button-border-width) solid
       var(--van-button-danger-border-color);
   }
 
   &--warning {
     color: var(--van-button-warning-color);
-    background-color: var(--van-button-warning-background-color);
+    background: var(--van-button-warning-background-color);
     border: var(--van-button-border-width) solid
       var(--van-button-warning-border-color);
   }
 
   &--plain {
-    background-color: var(--van-button-plain-background-color);
+    background: var(--van-button-plain-background-color);
 
     &.van-button--primary {
       color: var(--van-button-primary-background-color);