diff --git a/frontend/admin/src/pages/plugin/normal/add/components/PriceCommission.vue b/frontend/admin/src/pages/plugin/normal/add/components/PriceCommission.vue
index 7c91a735f..6de82cff9 100644
--- a/frontend/admin/src/pages/plugin/normal/add/components/PriceCommission.vue
+++ b/frontend/admin/src/pages/plugin/normal/add/components/PriceCommission.vue
@@ -70,7 +70,7 @@
                   :max="9999999999"
                   class="priceBox input-number-unit-class"
                   class-unit="元"
-                  @input="changeVipPrice(0, 'oneFormValidate')"
+                  @change="changeVipPrice(0, 'oneFormValidate')"
                 ></el-input-number>
               </template>
               <template v-else-if="item.slot === 'vip_proportion'">
@@ -81,7 +81,7 @@
                   :max="9999999999"
                   class="priceBox input-number-unit-class"
                   class-unit="%"
-                  @input="changeDiscount(0, 'oneFormValidate')"
+                  @change="changeDiscount(0, 'oneFormValidate')"
                 ></el-input-number>
               </template>
             </template>
@@ -177,9 +177,9 @@
                       const newData = [...manyFormValidate];
                       newData[scope.$index + 1].vip_price = val;
                       emit('update:manyFormValidate', newData);
-                      changeVipPrice(scope.$index + 1);
                     }
                   "
+                  @change="changeVipPrice(scope.$index + 1)"
                 ></el-input-number>
               </template>
               <template v-else-if="item.slot === 'vip_proportion'">
@@ -195,9 +195,9 @@
                       const newData = [...manyFormValidate];
                       newData[scope.$index + 1].vip_proportion = val;
                       emit('update:manyFormValidate', newData);
-                      changeDiscount(scope.$index + 1);
                     }
                   "
+                  @change="changeDiscount(scope.$index + 1)"
                 ></el-input-number>
               </template>
             </template>
diff --git a/frontend/admin/src/pages/plugin/normal/add/index.vue b/frontend/admin/src/pages/plugin/normal/add/index.vue
index 26938f9ea..14e1e9fea 100644
--- a/frontend/admin/src/pages/plugin/normal/add/index.vue
+++ b/frontend/admin/src/pages/plugin/normal/add/index.vue
@@ -889,19 +889,16 @@ function see(data, name, index) {
 }
 // 修改分佣比例
 function changeDiscount(index, type = 'manyFormValidate') {
-  // 根据分佣比例 vip_proportion 修改会员价 保留2位小数
-  formTable(type)[index].vip_price = (
-    formTable(type)[index].price *
-    (formTable(type)[index].vip_proportion / 100)
-  ).toFixed(2);
+  // 根据分佣比例 vip_proportion 修改会员价,写回数字(字符串会破坏 el-input-number 输入)
+  formTable(type)[index].vip_price = Number(
+    (formTable(type)[index].price * (formTable(type)[index].vip_proportion / 100)).toFixed(2),
+  );
 }
 // 修改会员价
 function changeVipPrice(index, type = 'manyFormValidate') {
-  // 根据会员价计算出分佣比例
-  formTable(type)[index].vip_proportion = (
-    (formTable(type)[index].vip_price / formTable(type)[index].price) *
-    100
-  ).toFixed(2);
+  // 售价为 0 时无法反推折扣,置 0 防止 Infinity 被钳制成极大值写回
+  const row = formTable(type)[index];
+  row.vip_proportion = row.price > 0 ? Number(((row.vip_price / row.price) * 100).toFixed(2)) : 0;
 }
 // 添加优惠券
 function addGoodsCoupon(index, name) {
@@ -1029,10 +1026,11 @@ function brokerageSetUp() {
   for (let val of manyFormValidate.value) {
     if (manyVipPrice.value != undefined) {
       val['vip_price'] = manyVipPrice.value;
-      val['vip_proportion'] = ((val.vip_price / val.price) * 100).toFixed(2);
+      // 售价为 0 时无法反推折扣,置 0 防止 Infinity
+      val['vip_proportion'] = val.price > 0 ? Number(((val.vip_price / val.price) * 100).toFixed(2)) : 0;
     } else {
       val['vip_proportion'] = manyVipDiscount.value;
-      val['vip_price'] = (val.price * (manyVipDiscount.value / 100)).toFixed(2);
+      val['vip_price'] = Number((val.price * (manyVipDiscount.value / 100)).toFixed(2));
     }
   }
 }