diff --git a/commission.go b/commission.go
new file mode 100644
index 0000000..9877350
--- /dev/null
+++ b/commission.go
@@ -0,0 +1,45 @@
+package productrpc
+
+import (
+	"strings"
+
+	"git.tetele.net/tgo/helper"
+)
+
+/**
+ * commission_rule 规则，１按系统设置，２单独设置
+ * commission_value 单独佣金值
+ * commission_rate 系统佣金比例
+ */
+
+func ProductCommission(commission_rule, commission_value, commission_rate string, product_price, cost_price string, quantity interface{}) float64 {
+
+	var commission_rule_rate float64 //佣金按比例换算成的小数
+	var commission_type string
+	switch commission_rule {
+	case "1": //按系统设置
+		commission_rule_rate = helper.FloatQuo(commission_rate, 100)
+		commission_type = "rate"
+
+	case "2": //单独设置
+		if strings.Contains(commission_value, "%") { //百分比
+			commission_rule_rate = helper.FloatQuo(strings.ReplaceAll(commission_value, "%", ""), 100)
+			commission_type = "rate"
+		} else {
+			commission_type = "fixed"
+		}
+
+	}
+
+	var commission float64
+	switch commission_type {
+	case "rate":
+		commission = helper.FloatMul(helper.FloatMul(helper.FloatSub(product_price, cost_price), commission_rule_rate), quantity) //利润
+
+	case "fixed":
+
+		commission = helper.FloatMul(commission_value, quantity)
+	}
+
+	return commission
+}
diff --git a/commission_test.go b/commission_test.go
new file mode 100644
index 0000000..d8e4e97
--- /dev/null
+++ b/commission_test.go
@@ -0,0 +1,18 @@
+package productrpc
+
+import (
+	"testing"
+)
+
+func Test_ProductCommission(t *testing.T) {
+
+	commission_rule := "2"
+	commission_value := "2%"
+	commission_rate := "35"
+	product_price := "105"
+	cost_price := "80"
+	quantity := "1"
+	ret := ProductCommission(commission_rule, commission_value, commission_rate, product_price, cost_price, quantity)
+
+	t.Log(ret)
+}
diff --git a/favorite.go b/favorite.go
index 33af033..614c29f 100644
--- a/favorite.go
+++ b/favorite.go
@@ -5,8 +5,8 @@ import (
 )
 
 /**
- * 获取商品进行中活动
- * 2021/10/06
+ * 收藏
+ * 2021/10/14
  * GZ
  */
 func Favorite(site_id, dbname, product_id string, user_id string, url ...string) (int64, error) {
diff --git a/product_activity_test.go b/product_activity_test.go
index 8fbd7c3..d812197 100644
--- a/product_activity_test.go
+++ b/product_activity_test.go
@@ -6,10 +6,10 @@ import (
 
 func Test_GetProductAllActivity(t *testing.T) {
 	dbname := "shop_v2"
-	id := "122"
+	id := "187"
 	site_id := "1058278"
 
-	ret, err := GetAllActivity(site_id, dbname, id, "0")
+	ret, err := GetProductAllActivity(site_id, dbname, id, "0", "")
 
 	t.Log(ret)
 	t.Log(err)