diff --git a/hutool-core/src/main/java/cn/hutool/core/io/file/FileNameUtil.java b/hutool-core/src/main/java/cn/hutool/core/io/file/FileNameUtil.java
index f5a32b1c5..0550e0958 100755
--- a/hutool-core/src/main/java/cn/hutool/core/io/file/FileNameUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/io/file/FileNameUtil.java
@@ -238,7 +238,7 @@ public class FileNameUtil {
 			// issue#I4W5FS@Gitee
 			final int secondToLastIndex = fileName.substring(0, index).lastIndexOf(StrUtil.DOT);
 			final String substr = fileName.substring(secondToLastIndex == -1 ? index : secondToLastIndex + 1);
-			if (StrUtil.containsAny(substr, SPECIAL_SUFFIX)) {
+			if (StrUtil.equalsAny(substr, SPECIAL_SUFFIX)) {
 				return substr;
 			}
 
diff --git a/hutool-core/src/test/java/cn/hutool/core/io/file/FileNameUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/io/file/FileNameUtilTest.java
index b06245d06..44d904e0d 100755
--- a/hutool-core/src/test/java/cn/hutool/core/io/file/FileNameUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/io/file/FileNameUtilTest.java
@@ -19,4 +19,12 @@ public class FileNameUtilTest {
 		final String s = FileNameUtil.mainName("abc.tar.gz");
 		assertEquals("abc", s);
 	}
+
+	@Test
+	public void extNameAndMainNameBugTest() {
+		// 正确，输出前缀为 "app-v2.3.1-star"
+		assertEquals("app-v2.3.1-star",FileNameUtil.mainName("app-v2.3.1-star.gz"));
+		// 当前代码会失败，预期后缀结果 "gz"，但是输出 "star.gz"
+		assertEquals("gz", FileNameUtil.extName("app-v2.3.1-star.gz"));
+	}
 }