diff --git a/pkg/errorx/dao.go b/pkg/errorx/dao.go
new file mode 100644
index 0000000..1e28c49
--- /dev/null
+++ b/pkg/errorx/dao.go
@@ -0,0 +1,9 @@
+package errorx
+
+func DaoTypeErr(typ string) error {
+	return New("the type is not: %s", typ)
+}
+
+func NotKeyErr(key string) error {
+	return New("the key is not exist, key:%s", key)
+}