diff --git a/model/price.go b/model/price.go
index 841e3515..211a8a87 100644
--- a/model/price.go
+++ b/model/price.go
@@ -62,18 +62,14 @@ func (price *Price) GetOutput() float64 {
 	return price.Output
 }
 
-func (price *Price) FetchInputCurrencyPrice(rate float64) float64 {
+func (price *Price) FetchInputCurrencyPrice(rate float64) string {
 	r := decimal.NewFromFloat(price.GetInput()).Mul(decimal.NewFromFloat(rate))
-	v, _ := r.Float64()
-
-	return v
+	return r.String()
 }
 
-func (price *Price) FetchOutputCurrencyPrice(rate float64) float64 {
+func (price *Price) FetchOutputCurrencyPrice(rate float64) string {
 	r := decimal.NewFromFloat(price.GetOutput()).Mul(decimal.NewFromFloat(rate))
-	v, _ := r.Float64()
-
-	return v
+	return r.String()
 }
 
 func UpdatePrices(tx *gorm.DB, models []string, prices *Price) error {
diff --git a/relay/util/quota.go b/relay/util/quota.go
index 13392881..79ba1a9a 100644
--- a/relay/util/quota.go
+++ b/relay/util/quota.go
@@ -129,13 +129,13 @@ func (q *Quota) completedQuotaConsumption(usage *types.Usage, tokenName string,
 	}
 	var modelRatioStr string
 	if q.price.Type == model.TimesPriceType {
-		modelRatioStr = fmt.Sprintf("$%g/次", q.price.FetchInputCurrencyPrice(model.DollarRate))
+		modelRatioStr = fmt.Sprintf("$%s/次", q.price.FetchInputCurrencyPrice(model.DollarRate))
 	} else {
 		// 如果输入费率和输出费率一样，则只显示一个费率
 		if q.price.GetInput() == q.price.GetOutput() {
-			modelRatioStr = fmt.Sprintf("$%g/1k", q.price.FetchInputCurrencyPrice(model.DollarRate))
+			modelRatioStr = fmt.Sprintf("$%s/1k", q.price.FetchInputCurrencyPrice(model.DollarRate))
 		} else {
-			modelRatioStr = fmt.Sprintf("$%g/1k (输入) | $%g/1k (输出)", q.price.FetchInputCurrencyPrice(model.DollarRate), q.price.FetchOutputCurrencyPrice(model.DollarRate))
+			modelRatioStr = fmt.Sprintf("$%s/1k (输入) | $%s/1k (输出)", q.price.FetchInputCurrencyPrice(model.DollarRate), q.price.FetchOutputCurrencyPrice(model.DollarRate))
 		}
 	}