.

src/pages/invoice/components/InvoiceInfo.vue

 <template>
-  <van-cell-group title="开票单位">
+  
+  <van-cell-group>
+    <template #title>
+      开票信息（<span class='groupTitle'>请务必仔细填写以下信息，必填</span>）
+    </template>
     <van-field
       label="开票单位"
       v-model="props.pdata.orgName"
           <van-radio name="否">否</van-radio>
         </van-radio-group>
       </template>
-    </van-field>
-    <van-field
+    </van-field>    
+  </van-cell-group>
+  <van-cell-group title="发票寄送的收件信息（非必填）">
+  <van-field
       label="收件人姓名"
       v-model="props.pdata.mailUser"
       name="mailUser"
   }
 })
 </script>
+<style lang="less" scoped>
+.groupTitle{
+  color: red;
+}
+</style>