diff --git a/business/model/store.go b/business/model/store.go
index 604371afc..3ae1ba43f 100644
--- a/business/model/store.go
+++ b/business/model/store.go
@@ -476,7 +476,7 @@ type PriceReferSnapshot struct {
 func (*PriceReferSnapshot) TableUnique() [][]string {
 	return [][]string{
 		[]string{"CityCode", "SkuID", "SnapshotAt"},
-		[]string{"CityCode", "NameID", "SnapshotAt"},
+		[]string{"CityCode", "NameID", "SkuID", "SnapshotAt"},
 	}
 }