diff --git a/src/main/java/com/github/tobato/fastdfs/service/DefaultFastFileStorageClient.java b/src/main/java/com/github/tobato/fastdfs/service/DefaultFastFileStorageClient.java
index 78168dc..5074283 100644
--- a/src/main/java/com/github/tobato/fastdfs/service/DefaultFastFileStorageClient.java
+++ b/src/main/java/com/github/tobato/fastdfs/service/DefaultFastFileStorageClient.java
@@ -105,7 +105,6 @@ public StorePath uploadImageAndCrtThumbImage(InputStream inputStream,
     @Override
     public StorePath uploadFile(FastFile fastFile) {
         Validate.notNull(fastFile.getInputStream(), "上传文件流不能为空");
-        Validate.notBlank(fastFile.getFileExtName(), "文件扩展名不能为空");
         // 获取存储节点
         StorageNode client = getStorageNode(fastFile.getGroupName());
         // 上传文件
diff --git a/src/test/java/com/github/tobato/fastdfs/service/FastFileStorageClientTest.java b/src/test/java/com/github/tobato/fastdfs/service/FastFileStorageClientTest.java
index 97c9e04..b619abe 100644
--- a/src/test/java/com/github/tobato/fastdfs/service/FastFileStorageClientTest.java
+++ b/src/test/java/com/github/tobato/fastdfs/service/FastFileStorageClientTest.java
@@ -9,6 +9,7 @@
 import com.github.tobato.fastdfs.domain.fdfs.StorePath;
 import com.github.tobato.fastdfs.domain.fdfs.ThumbImageConfig;
 import org.apache.commons.io.FilenameUtils;
+import org.apache.logging.log4j.util.Strings;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.slf4j.Logger;
@@ -23,9 +24,11 @@
 import java.io.InputStream;
 import java.util.HashSet;
 import java.util.Set;
+import java.util.Collections;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
 
 /**
  * FastFileStorageClient客户端
@@ -89,6 +92,33 @@ public void testUploadFileWithoutMetaData() {
         storageClient.deleteFile(path.getFullPath());
     }
 
+    /**
+     * 测试上传文件的时候不提供后缀名称
+     */
+    @Test
+    public void testUploadWithoutExtName() {
+        // null扩展名的文件
+        LOGGER.debug("##上传具有null扩展名的文件..##");
+        RandomTextFile file = new RandomTextFile();
+        file.setFileExtName(null);
+        assertNull(file.getFileExtName());
+
+        StorePath path = storageClient.uploadFile(file.getInputStream(),
+                file.getFileSize(), file.getFileExtName(), Collections.<MetaData>emptySet());
+        assertNotNull(path);
+        LOGGER.debug("上传文件 result={}", path);
+        // 空字串扩展名文件
+        LOGGER.debug("##上传具有空字符串扩展名的文件..##");
+        file = new RandomTextFile();
+        file.setFileExtName(Strings.EMPTY);
+        assertEquals(Strings.EMPTY, file.getFileExtName());
+
+        path = storageClient.uploadFile(file.getInputStream(),
+                file.getFileSize(), file.getFileExtName(), Collections.<MetaData>emptySet());
+        assertNotNull(path);
+        LOGGER.debug("上传文件 result={}", path);
+    }
+
     /**
      * 上传图片，并且生成缩略图
      * <pre>