diff --git a/common.go b/common.go
index 2bc572a..e28f4de 100644
--- a/common.go
+++ b/common.go
@@ -2,6 +2,7 @@ package mycommon
 
 import (
 	"git.makemake.in/kzkzzzz/mycommon/mylog"
+	"math/rand/v2"
 	"runtime/debug"
 )
 
@@ -20,3 +21,8 @@ func SafeGo(fn func()) {
 		SafeFn(fn)
 	}()
 }
+
+// RandRange [min, max] 左右均包含
+func RandRange(min, max int) int {
+	return rand.IntN(max+1-min) + min
+}