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 e7f58b9a0..5670f4383 100644
--- 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
@@ -45,7 +45,7 @@ public class FileNameUtil {
 	/**
 	 * 特殊后缀
 	 */
-	private static final CharSequence[] SPECIAL_SUFFIX = {"tar.bz2", "tar.Z", "tar.gz", ".tar.xz"};
+	private static final CharSequence[] SPECIAL_SUFFIX = {"tar.bz2", "tar.Z", "tar.gz", "tar.xz"};
 
 
 	// -------------------------------------------------------------------------------------------- name start
diff --git a/hutool-core/src/test/java/cn/hutool/core/io/FileUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/io/FileUtilTest.java
index 448675705..8a50a7641 100644
--- a/hutool-core/src/test/java/cn/hutool/core/io/FileUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/io/FileUtilTest.java
@@ -404,6 +404,10 @@ public class FileUtilTest {
 		path = FileUtil.isWindows() ? "d:\\aaa\\bbb\\cc\\fff.tar.bz2" : "~/Desktop/hutool/fff.tar.bz2";
 		mainName = FileUtil.extName(path);
 		Assert.assertEquals("tar.bz2", mainName);
+
+		path = FileUtil.isWindows() ? "d:\\aaa\\bbb\\cc\\fff.tar.xz" : "~/Desktop/hutool/fff.tar.xz";
+		mainName = FileUtil.extName(path);
+		Assert.assertEquals("tar.xz", mainName);
 	}
 
 	@Test