html: 

<div class="divStart1"><span class="span2"></span><span class="haha">選擇指標：</span></div>
       <radio-group class="rg" v-model="selectValue" @on-change="current_selected" type='button'>
            <radio class="ha" v-for="list in typeList" :label="list"></radio>
       </radio-group>

css:

.ivu-radio-group-button .ivu-radio-wrapper:first-child {
    border-radius: 4px 0 0 4px;
    border-left: 1px solid #dddee1;
    margin-right: 20px;
    border-radius: 20px;
}
.ivu-radio-group-button .ivu-radio-wrapper{
    border-radius: 4px 0 0 4px;
    border-left: 1px solid #dddee1;
    margin-right: 20px;
    margin-top: 10px;
    border-radius: 20px;
    font-size: 14px;
}
.ivu-radio-group-button .ivu-radio-wrapper-checked {
    background: #34bae8;
    border-color: #34bae8;
    color: #fff;
    -webkit-box-shadow: -1px 0 0 0 #34bae8;
    box-shadow: -1px 0 0 0 #34bae8;
    z-index: 1;
}
.ivu-radio-group-button .ivu-radio-wrapper:last-child{
    border-radius: 4px 0 0 4px;
    border-left: 1px solid #dddee1;
    margin-right: 20px;
    border-radius: 20px;
}
.ivu-radio-group-button .ivu-radio-wrapper:after, .ivu-radio-group-button .ivu-radio-wrapper:before {
    content: '';
    display: block;
    position: absolute;
    width: 0px;
    height: 0%;
    left: -1px;
    top: 0;
    -webkit-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
}
.rg{
    margin-left: 25px;
    margin-top: 16px;
}

结果：