diff --git a/basic-util/src/main/java/ink/wgink/util/string/WStringUtil.java b/basic-util/src/main/java/ink/wgink/util/string/WStringUtil.java
index a67b775a..27aaa9bc 100644
--- a/basic-util/src/main/java/ink/wgink/util/string/WStringUtil.java
+++ b/basic-util/src/main/java/ink/wgink/util/string/WStringUtil.java
@@ -8,6 +8,7 @@ import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
 import net.sourceforge.pinyin4j.format.HanyuPinyinVCharType;
 import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;
 
+import java.util.Random;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -46,7 +47,7 @@ public class WStringUtil {
      * @param valStr
      * @return String[]
      */
-    public static String[] StrList(String valStr) {
+    public static String[] strList(String valStr) {
         int i = 0;
         String TempStr = valStr;
         String[] returnStr = new String[valStr.length() + 1 - TempStr.replace(",", "").length()];
@@ -54,7 +55,6 @@ public class WStringUtil {
         while (valStr.indexOf(',') > 0) {
             returnStr[i] = valStr.substring(0, valStr.indexOf(','));
             valStr = valStr.substring(valStr.indexOf(',') + 1, valStr.length());
-
             i++;
         }
         return returnStr;
@@ -282,4 +282,29 @@ public class WStringUtil {
         return strBuf.toString();
     }
 
+    /**
+     * 从字符串中随机取出新的字符串
+     *
+     * @param input     输入字符串
+     * @param outLength 新字符串长度
+     * @return
+     */
+    public static String randomSubStr(String input, int outLength) {
+        if (input == null || input.isEmpty()) {
+            return null;
+        }
+        if (outLength >= input.length()) {
+            outLength = input.length();
+        }
+        if (outLength <= 0) {
+            outLength = 6;
+        }
+        StringBuilder subStrSB = new StringBuilder();
+        Random random = new Random();
+        for (int i = 0; i < outLength; i++) {
+            subStrSB.append(input.charAt(random.nextInt(input.length())));
+        }
+        return subStrSB.toString();
+    }
+
 }