diff --git a/src/backend/NSExt/Extensions/LongExtensions.cs b/src/backend/NSExt/Extensions/LongExtensions.cs
index 6ea66b9..5792e5f 100644
--- a/src/backend/NSExt/Extensions/LongExtensions.cs
+++ b/src/backend/NSExt/Extensions/LongExtensions.cs
@@ -5,6 +5,8 @@ namespace NSExt.Extensions;
 /// </summary>
 public static class LongExtensions
 {
+    private const string _CHARS_36 = "0123456789abcdefghijklmnopqrstuvwxyz";
+
     /// <summary>
     ///     判断枚举是否包含某个位
     /// </summary>
@@ -24,6 +26,22 @@ public static class LongExtensions
         return new Random(Guid.NewGuid().GetHashCode()).NextInt64(me[0], me[1]);
     }
 
+    /// <summary>
+    ///     转36进制
+    /// </summary>
+    public static string Sys36(this long me)
+    {
+        var ret = new StringBuilder();
+        while (me > 35)
+        {
+            _ = ret.Insert(0, _CHARS_36[(int)(me % 36)]);
+            me /= 36;
+        }
+
+        _ = ret.Insert(0, _CHARS_36[(int)me]);
+        return ret.ToString();
+    }
+
     /// <summary>
     ///     1970毫秒数转换成日期对象
     /// </summary>
diff --git a/src/backend/NSExt/Extensions/StringExtensions.cs b/src/backend/NSExt/Extensions/StringExtensions.cs
index c99a60b..1720eb6 100644
--- a/src/backend/NSExt/Extensions/StringExtensions.cs
+++ b/src/backend/NSExt/Extensions/StringExtensions.cs
@@ -14,7 +14,7 @@ namespace NSExt.Extensions;
 /// </summary>
 public static partial class StringExtensions
 {
-    private const string _CHARACTERS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+    private const string _CHARS_62 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
     private static readonly Regex _regexIpV4 = RegexIpV4();
 
     /// <summary>
@@ -51,15 +51,43 @@ public static partial class StringExtensions
         return decrypted.HexDe();
     }
 
+    /// <summary>
+    ///     将指定的输入字符串进行Base62编码
+    /// </summary>
+    public static string Base62(this string me)
+    {
+        // Convert string to byte array
+        var bytes = Encoding.UTF8.GetBytes(me);
+
+        // Convert byte array to BigInteger for easier processing
+        var bigInteger = new BigInteger(bytes);
+
+        if (bigInteger == 0)
+        {
+            return _CHARS_62[0].ToString();
+        }
+
+        var result = new StringBuilder();
+
+        while (bigInteger > 0)
+        {
+            var remainder = (int)(bigInteger % 62);
+            bigInteger /= 62;
+            _ = result.Insert(0, _CHARS_62[remainder]);
+        }
+
+        return result.ToString();
+    }
+
     /// <summary>
     ///     将指定的输入字符串进行Base62解码
     /// </summary>
     /// <exception cref="ArgumentException">ArgumentException</exception>
-    public static string Base62Decode(this string me)
+    public static string Base62De(this string me)
     {
         BigInteger result = 0;
 
-        foreach (var index in me.Select(c => _CHARACTERS.IndexOf(c)))
+        foreach (var index in me.Select(c => _CHARS_62.IndexOf(c)))
         {
             if (index < 0)
             {
@@ -81,34 +109,6 @@ public static partial class StringExtensions
         return Encoding.UTF8.GetString(bytes);
     }
 
-    /// <summary>
-    ///     将指定的输入字符串进行Base62编码
-    /// </summary>
-    public static string Base62Encode(this string me)
-    {
-        // Convert string to byte array
-        var bytes = Encoding.UTF8.GetBytes(me);
-
-        // Convert byte array to BigInteger for easier processing
-        var bigInteger = new BigInteger(bytes);
-
-        if (bigInteger == 0)
-        {
-            return _CHARACTERS[0].ToString();
-        }
-
-        var result = new StringBuilder();
-
-        while (bigInteger > 0)
-        {
-            var remainder = (int)(bigInteger % 62);
-            bigInteger /= 62;
-            _ = result.Insert(0, _CHARACTERS[remainder]);
-        }
-
-        return result.ToString();
-    }
-
     /// <summary>
     ///     base64编码
     /// </summary>