diff --git a/src/NSExt/Extensions/LongExtensions.cs b/src/NSExt/Extensions/LongExtensions.cs
index 7c0c08b..a0b0195 100644
--- a/src/NSExt/Extensions/LongExtensions.cs
+++ b/src/NSExt/Extensions/LongExtensions.cs
@@ -15,6 +15,15 @@ public static class LongExtensions
         return (me & val) == val;
     }
 
+    /// <summary>
+    ///     生成随机数
+    /// </summary>
+    /// <param name="me">me</param>
+    public static long Rand(this long[] me)
+    {
+        return new Random(Guid.NewGuid().GetHashCode()).NextInt64(me[0], me[1]);
+    }
+
     /// <summary>
     ///     1970毫秒数转换成日期对象
     /// </summary>