diff --git a/hutool-core/src/main/java/org/dromara/hutool/core/util/RandomUtil.java b/hutool-core/src/main/java/org/dromara/hutool/core/util/RandomUtil.java
index 834632c73..150b94935 100644
--- a/hutool-core/src/main/java/org/dromara/hutool/core/util/RandomUtil.java
+++ b/hutool-core/src/main/java/org/dromara/hutool/core/util/RandomUtil.java
@@ -675,14 +675,28 @@ public class RandomUtil {
 		return randomString(BASE_CHAR_NUMBER_LOWER, length).toUpperCase();
 	}
 
+	/**
+	 * 获得一个随机的字符串（只包含数字和字母） 并排除指定字符串
+	 *
+	 * @param length   字符串的长度
+	 * @param elemData 要排除的字符串,如：去重容易混淆的字符串，oO0、lL1、q9Q、pP，区分大小写
+	 * @return 随机字符串
+	 */
+	public static String randomStringWithoutStr(final int length, final String elemData) {
+		String baseStr = BASE_CHAR_NUMBER;
+		baseStr = StrUtil.removeAll(baseStr, elemData.toCharArray());
+		return randomString(baseStr, length);
+	}
+
 	/**
 	 * 获得一个随机的字符串（只包含数字和小写字母） 并排除指定字符串
 	 *
 	 * @param length   字符串的长度
 	 * @param elemData 要排除的字符串,如：去重容易混淆的字符串，oO0、lL1、q9Q、pP，不区分大小写
 	 * @return 随机字符串
+	 * @since 5.8.28
 	 */
-	public static String randomStringWithoutStr(final int length, final String elemData) {
+	public static String randomStringLowerWithoutStr(final int length, final String elemData) {
 		String baseStr = BASE_CHAR_NUMBER_LOWER;
 		baseStr = StrUtil.removeAll(baseStr, elemData.toLowerCase().toCharArray());
 		return randomString(baseStr, length);
diff --git a/hutool-core/src/test/java/org/dromara/hutool/core/util/RandomUtilTest.java b/hutool-core/src/test/java/org/dromara/hutool/core/util/RandomUtilTest.java
index a8b5a32c5..a49c167aa 100644
--- a/hutool-core/src/test/java/org/dromara/hutool/core/util/RandomUtilTest.java
+++ b/hutool-core/src/test/java/org/dromara/hutool/core/util/RandomUtilTest.java
@@ -76,11 +76,9 @@ public class RandomUtilTest {
 	}
 
 	@Test
-	@Disabled
-	public void randomStringWithoutStrTest() {
+	public void randomStringLowerWithoutStrTest() {
 		for (int i = 0; i < 100; i++) {
-			final String s = RandomUtil.randomStringWithoutStr(8, "0IPOL");
-			System.out.println(s);
+			final String s = RandomUtil.randomStringLowerWithoutStr(8, "0IPOL");
 			for (final char c : "0IPOL".toCharArray()) {
 				Assertions.assertFalse(s.contains((String.valueOf(c).toLowerCase(Locale.ROOT))));
 			}