diff --git a/internal/pkg/db/db.go b/internal/pkg/db/db.go
index b1b78cd..87919a4 100644
--- a/internal/pkg/db/db.go
+++ b/internal/pkg/db/db.go
@@ -19,6 +19,10 @@ func InitDb() (*safety.Var[*sqlx.DB], error) {
 	if err != nil {
 		return nil, err
 	}
+	preDb := safeDb.Load()
+	if preDb != nil {
+		_ = preDb.Close()
+	}
 	if c.Mysql.Pool.ConnMaxIdleTime != 0 {
 		db.SetConnMaxIdleTime(c.Mysql.Pool.ConnMaxLifetime)
 	}