diff --git a/examples/routers/radio.vue b/examples/routers/radio.vue
index ffc7e2e4..4a447857 100644
--- a/examples/routers/radio.vue
+++ b/examples/routers/radio.vue
@@ -22,12 +22,18 @@
                 <span>Windows</span>
             </Radio>
         </Radio-group>
-        <Radio-group v-model="button2" type="button" size="large">
+        <Radio-group v-model="button2" type="button" size="large" button-style="solid">
             <Radio label="北京"></Radio>
             <Radio label="上海" disabled></Radio>
             <Radio label="深圳"></Radio>
             <Radio label="杭州"></Radio>
         </Radio-group>
+        <Radio-group v-model="button2" type="button" size="large">
+            <Radio label="北京"></Radio>
+            <Radio label="上海"></Radio>
+            <Radio label="深圳"></Radio>
+            <Radio label="杭州"></Radio>
+        </Radio-group>
         <Radio-group v-model="button2" type="button" size="default">
             <Radio label="北京"></Radio>
             <Radio label="上海" disabled></Radio>
diff --git a/src/components/radio/radio-group.vue b/src/components/radio/radio-group.vue
index e665eb1b..f13afffe 100644
--- a/src/components/radio/radio-group.vue
+++ b/src/components/radio/radio-group.vue
@@ -41,6 +41,13 @@
             name: {
                 type: String,
                 default: getUuid
+            },
+            // 4.5.0
+            buttonStyle: {
+                validator (value) {
+                    return oneOf(value, ['default', 'solid']);
+                },
+                default: 'default'
             }
         },
         data () {
@@ -57,6 +64,7 @@
                         [`${prefixCls}-${this.size}`]: !!this.size,
                         [`ivu-radio-${this.size}`]: !!this.size,
                         [`${prefixCls}-${this.type}`]: !!this.type,
+                        [`${prefixCls}-button-${this.buttonStyle}`]: this.type === 'button' && this.buttonStyle !== 'default',
                         [`${prefixCls}-vertical`]: this.vertical
                     }
                 ];
diff --git a/src/styles/components/radio.less b/src/styles/components/radio.less
index f1b7778d..15623d99 100644
--- a/src/styles/components/radio.less
+++ b/src/styles/components/radio.less
@@ -338,6 +338,16 @@ span.@{radio-prefix-cls} + * {
             box-shadow: none!important;
         }
     }
+    &-solid .@{radio-prefix-cls}-wrapper{
+        &-checked:not(.@{radio-prefix-cls}-wrapper-disabled){
+            background: @primary-color;
+            color: #fff;
+            &:hover{
+                background: tint(@primary-color, 20%);
+                color: #fff;
+            }
+        }
+    }
 }
 
 .@{radio-group-button-prefix-cls}.@{radio-group-prefix-cls}-large .@{radio-prefix-cls}-wrapper{