diff --git a/internal/utils/dateutils/utils.go b/internal/utils/dateutils/utils.go
new file mode 100644
index 00000000..abf9110c
--- /dev/null
+++ b/internal/utils/dateutils/utils.go
@@ -0,0 +1,12 @@
+// Copyright 2023 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package dateutils
+
+// SplitYmd 分隔Ymd格式的日期
+// Ymd => Y-m-d
+func SplitYmd(day string) string {
+	if len(day) != 8 {
+		return day
+	}
+	return day[:4] + "-" + day[4:6] + "-" + day[6:]
+}