diff --git a/hutool-extra/src/main/java/cn/hutool/extra/ftp/AbstractFtp.java b/hutool-extra/src/main/java/cn/hutool/extra/ftp/AbstractFtp.java
index d79294931..ffc5bd1b8 100644
--- a/hutool-extra/src/main/java/cn/hutool/extra/ftp/AbstractFtp.java
+++ b/hutool-extra/src/main/java/cn/hutool/extra/ftp/AbstractFtp.java
@@ -112,7 +112,7 @@ public abstract class AbstractFtp implements Closeable {
 			return false;
 		}
 		// 文件验证
-		final String dir = StrUtil.removeSuffix(path, fileName);
+		final String dir = StrUtil.emptyToDefault(StrUtil.removeSuffix(path, fileName), ".");
 		final List<String> names;
 		try {
 			names = ls(dir);
diff --git a/hutool-extra/src/test/java/cn/hutool/extra/ftp/FtpTest.java b/hutool-extra/src/test/java/cn/hutool/extra/ftp/FtpTest.java
index 06580a73e..6dc04d292 100644
--- a/hutool-extra/src/test/java/cn/hutool/extra/ftp/FtpTest.java
+++ b/hutool-extra/src/test/java/cn/hutool/extra/ftp/FtpTest.java
@@ -106,6 +106,12 @@ public class FtpTest {
 	public void existSftpTest() throws Exception {
 		try (Sftp ftp = new Sftp("127.0.0.1", 22, "test", "test")) {
 			Console.log(ftp.pwd());
+			Console.log(ftp.exist(null));
+			Console.log(ftp.exist(""));
+			Console.log(ftp.exist("."));
+			Console.log(ftp.exist(".."));
+			Console.log(ftp.exist("/"));
+			Console.log(ftp.exist("a"));
 			Console.log(ftp.exist("/home/test"));
 			Console.log(ftp.exist("/home/test/"));
 			Console.log(ftp.exist("/home/test//////"));
@@ -122,11 +128,13 @@ public class FtpTest {
 	@Ignore
 	public void existFtpTest() throws Exception {
 		try (Ftp ftp = new Ftp("127.0.0.1", 21)) {
+			Console.log(ftp.pwd());
 			Console.log(ftp.exist(null));
 			Console.log(ftp.exist(""));
 			Console.log(ftp.exist("."));
 			Console.log(ftp.exist(".."));
 			Console.log(ftp.exist("/"));
+			Console.log(ftp.exist("a"));
 			Console.log(ftp.exist("/test"));
 			Console.log(ftp.exist("/test/"));
 			Console.log(ftp.exist("/test//////"));