diff --git a/components/CouponsPopup.vue b/components/CouponsPopup.vue
index 427b3db..eee1be7 100644
--- a/components/CouponsPopup.vue
+++ b/components/CouponsPopup.vue
@@ -148,7 +148,7 @@ export default {
       return this.twoList['unusable'].length
     },
     computePrice() {
-      return this.currentPrice - this.selectItem.couponPrice
+      return this.force2Decimal(this.currentPrice - this.selectItem.couponPrice)
     },
     maxIndex() {
       const maxIndex = this.list.reduce((a, b, c) => {
@@ -163,6 +163,9 @@ export default {
     
   },
   methods: {
+    force2Decimal(value) {
+      return this.$force2Decimal(value);
+    },
     changeNav(index) {
       this.current = index
     },