diff --git a/internal/util/indexparamcheck/conf_adapter.go b/internal/util/indexparamcheck/conf_adapter.go
index 6bb7a2d6c164bc55178219cc0c095d2f73148497..35533bc2b9630410eb101d5319a85da42b5d772d 100644
--- a/internal/util/indexparamcheck/conf_adapter.go
+++ b/internal/util/indexparamcheck/conf_adapter.go
@@ -124,6 +124,7 @@ type ConfAdapter interface {
 type BaseConfAdapter struct {
 }
 
+// CheckTrain check whether the params contains supported metrics types
 func (adapter *BaseConfAdapter) CheckTrain(params map[string]string) bool {
 	// dimension is specified when create collection
 	//if !CheckIntByRange(params, DIM, DefaultMinDim, DefaultMaxDim) {