diff --git a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java
index 4007aa6..639c689 100644
--- a/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java
+++ b/yudao-module-infra/src/main/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImpl.java
@@ -42,19 +42,19 @@ public class FileServiceImpl implements FileService {
      */
     static boolean PATH_PREFIX_DATE_ENABLE = true;
     /**
-     * 上传文件的后缀，是否包含时间戳
+     * 上传文件的后缀，是否启用
      *
-     * 目的：保证文件的唯一性，避免覆盖
+     * 算法：当前时间戳（毫秒）+ 5 位随机数；目的是保证文件的唯一性，避免覆盖
      * 定制：可按需调整成 UUID、或者其他方式
      */
     static boolean PATH_SUFFIX_TIMESTAMP_ENABLE = false;
     /**
-     * 时间戳是否作为上级目录
+     * 后缀是否作为上级目录
      *
-     * true：{@code yyyyMMdd/timestamp/原文件名.ext}；保留原文件名
-     * false：{@code yyyyMMdd/原文件名_timestamp.ext}；时间戳拼到文件名
+     * true：{@code yyyyMMdd/<后缀>/原文件名.ext}；保留原文件名
+     * false：{@code yyyyMMdd/原文件名_<后缀>.ext}；后缀拼到文件名
      */
-    static boolean PATH_TIMESTAMP_AS_DIRECTORY = true;
+    static boolean PATH_SUFFIX_AS_DIRECTORY = true;
 
     @Resource
     private FileConfigService fileConfigService;
@@ -115,7 +115,7 @@ public class FileServiceImpl implements FileService {
 
         // 2.1 先拼接 suffix 后缀
         if (StrUtil.isNotEmpty(suffix)) {
-            if (PATH_TIMESTAMP_AS_DIRECTORY) {
+            if (PATH_SUFFIX_AS_DIRECTORY) {
                 name = suffix + StrUtil.SLASH + name;
             } else {
                 String ext = FileUtil.extName(name);
diff --git a/yudao-module-infra/src/test/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImplTest.java b/yudao-module-infra/src/test/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImplTest.java
index 9656def..8cd8fe7 100644
--- a/yudao-module-infra/src/test/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImplTest.java
+++ b/yudao-module-infra/src/test/java/cn/iocoder/yudao/module/infra/service/file/FileServiceImplTest.java
@@ -42,7 +42,7 @@ public class FileServiceImplTest extends BaseDbUnitTest {
     public void setUp() {
         FileServiceImpl.PATH_PREFIX_DATE_ENABLE = true;
         FileServiceImpl.PATH_SUFFIX_TIMESTAMP_ENABLE = true;
-        FileServiceImpl.PATH_TIMESTAMP_AS_DIRECTORY = true;
+        FileServiceImpl.PATH_SUFFIX_AS_DIRECTORY = true;
     }
 
     @Test
@@ -201,7 +201,7 @@ public class FileServiceImplTest extends BaseDbUnitTest {
         String path = fileService.generateUploadPath(name, directory);
 
         // 断言
-        // 格式为：avatar/yyyyMMdd/timestamp/test.jpg
+        // 格式为：avatar/yyyyMMdd/{时间戳+随机数}/test.jpg
         assertTrue(path.startsWith(directory + "/"));
         // 包含日期格式：8 位数字，如 20240517
         assertTrue(path.matches(directory + "/\\d{8}/\\d+/test\\.jpg"));
@@ -237,7 +237,7 @@ public class FileServiceImplTest extends BaseDbUnitTest {
         String path = fileService.generateUploadPath(name, directory);
 
         // 断言
-        // 格式为：avatar/timestamp/test.jpg
+        // 格式为：avatar/{时间戳+随机数}/test.jpg
         assertTrue(path.startsWith(directory + "/"));
         assertTrue(path.matches(directory + "/\\d+/test\\.jpg"));
     }
@@ -270,7 +270,7 @@ public class FileServiceImplTest extends BaseDbUnitTest {
         String path = fileService.generateUploadPath(name, directory);
 
         // 断言
-        // 格式为：avatar/yyyyMMdd/timestamp/test
+        // 格式为：avatar/yyyyMMdd/{时间戳+随机数}/test
         assertTrue(path.startsWith(directory + "/"));
         assertTrue(path.matches(directory + "/\\d{8}/\\d+/test"));
     }
@@ -287,58 +287,58 @@ public class FileServiceImplTest extends BaseDbUnitTest {
         String path = fileService.generateUploadPath(name, directory);
 
         // 断言
-        // 格式为：yyyyMMdd/timestamp/test.jpg
+        // 格式为：yyyyMMdd/{时间戳+随机数}/test.jpg
         assertTrue(path.matches("\\d{8}/\\d+/test\\.jpg"));
     }
 
     @Test
-    public void testGenerateUploadPath_TimestampAsName_AllEnabled() {
+    public void testGenerateUploadPath_SuffixAsName_AllEnabled() {
         // 准备参数
         String name = "test.jpg";
         String directory = "avatar";
         FileServiceImpl.PATH_PREFIX_DATE_ENABLE = true;
         FileServiceImpl.PATH_SUFFIX_TIMESTAMP_ENABLE = true;
-        FileServiceImpl.PATH_TIMESTAMP_AS_DIRECTORY = false;
+        FileServiceImpl.PATH_SUFFIX_AS_DIRECTORY = false;
 
         // 调用
         String path = fileService.generateUploadPath(name, directory);
 
         // 断言
-        // 格式为：avatar/yyyyMMdd/test_timestamp.jpg
+        // 格式为：avatar/yyyyMMdd/test_{时间戳+随机数}.jpg
         assertTrue(path.matches(directory + "/\\d{8}/test_\\d+\\.jpg"));
     }
 
     @Test
-    public void testGenerateUploadPath_TimestampAsName_PrefixDisabled() {
+    public void testGenerateUploadPath_SuffixAsName_PrefixDisabled() {
         // 准备参数
         String name = "test.jpg";
         String directory = "avatar";
         FileServiceImpl.PATH_PREFIX_DATE_ENABLE = false;
         FileServiceImpl.PATH_SUFFIX_TIMESTAMP_ENABLE = true;
-        FileServiceImpl.PATH_TIMESTAMP_AS_DIRECTORY = false;
+        FileServiceImpl.PATH_SUFFIX_AS_DIRECTORY = false;
 
         // 调用
         String path = fileService.generateUploadPath(name, directory);
 
         // 断言
-        // 格式为：avatar/test_timestamp.jpg
+        // 格式为：avatar/test_{时间戳+随机数}.jpg
         assertTrue(path.matches(directory + "/test_\\d+\\.jpg"));
     }
 
     @Test
-    public void testGenerateUploadPath_TimestampAsName_NoExtension() {
+    public void testGenerateUploadPath_SuffixAsName_NoExtension() {
         // 准备参数
         String name = "test";
         String directory = "avatar";
         FileServiceImpl.PATH_PREFIX_DATE_ENABLE = true;
         FileServiceImpl.PATH_SUFFIX_TIMESTAMP_ENABLE = true;
-        FileServiceImpl.PATH_TIMESTAMP_AS_DIRECTORY = false;
+        FileServiceImpl.PATH_SUFFIX_AS_DIRECTORY = false;
 
         // 调用
         String path = fileService.generateUploadPath(name, directory);
 
         // 断言
-        // 格式为：avatar/yyyyMMdd/test_timestamp
+        // 格式为：avatar/yyyyMMdd/test_{时间戳+随机数}
         assertTrue(path.matches(directory + "/\\d{8}/test_\\d+"));
     }
 
@@ -354,7 +354,7 @@ public class FileServiceImplTest extends BaseDbUnitTest {
         String path = fileService.generateUploadPath(name, directory);
 
         // 断言
-        // 格式为：yyyyMMdd/timestamp/test.jpg
+        // 格式为：yyyyMMdd/{时间戳+随机数}/test.jpg
         assertTrue(path.matches("\\d{8}/\\d+/test\\.jpg"));
     }