diff --git a/internal/util/paramtable/param.go b/internal/util/paramtable/param.go
index eeba2e6fbe5f1418a839fb8f9c04c1c65e5fcedb..c57bf7781875f39c920f3cdc55848258b9c2baaa 100644
--- a/internal/util/paramtable/param.go
+++ b/internal/util/paramtable/param.go
@@ -54,6 +54,7 @@ func (p *BaseParamTable) Init() {
 	})
 }
 
+// LoadCfgToMemory loads configurations from file into memory.
 func (p *BaseParamTable) LoadCfgToMemory() {
 	p.initEtcdConf()
 	p.initMetaRootPath()