diff --git a/model/product/model.go b/model/product/model.go
index fcd1b73..7a682fd 100644
--- a/model/product/model.go
+++ b/model/product/model.go
@@ -100,6 +100,9 @@ func (p *Product) CalCNY(calculateProcess []CalculateProcess) {
 		process, price := c.Calculate(env)
 		if process != "" {
 			calculateStrings = append(calculateStrings, process)
+			if p.CNYPrice == 0 {
+				p.CNYPrice = price
+			}
 			p.CNYPrice = min(p.CNYPrice, price)
 		}
 	}
@@ -164,7 +167,7 @@ func (p *Product) CalCNY(calculateProcess []CalculateProcess) {
 
 // CalRate 计算收益率
 func (p *Product) CalRate() {
-	if p.DWPrice > 0 {
+	if p.DWPrice > 0 && p.CNYPrice > 0 {
 		// 如果有得物价格，就计算收益率
 		p.Rate = Decimal((p.DWPrice - p.CNYPrice) / p.CNYPrice * 100)
 	} else if p.Rate > 0 {