diff --git a/tools/azure-sdk-tools/packaging_tools/auto_codegen.py b/tools/azure-sdk-tools/packaging_tools/auto_codegen.py
index 2f88527f4374..460d9a546f60 100644
--- a/tools/azure-sdk-tools/packaging_tools/auto_codegen.py
+++ b/tools/azure-sdk-tools/packaging_tools/auto_codegen.py
@@ -6,7 +6,8 @@
 
 from .swaggertosdk.SwaggerToSdkCore import CONFIG_FILE, CONFIG_FILE_DPG
 from .generate_sdk import generate
-from .generate_utils import get_package_names, init_new_service, update_servicemetadata, judge_tag_preview
+from .generate_utils import (get_package_names, init_new_service, update_servicemetadata, judge_tag_preview,
+                             format_samples)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -47,6 +48,7 @@ def main(generate_input, generate_output):
 
             # Generate some necessary file for new service
             init_new_service(package_name, folder_name)
+            format_samples(sdk_code_path)
 
             # Update metadata
             try:
diff --git a/tools/azure-sdk-tools/packaging_tools/generate_utils.py b/tools/azure-sdk-tools/packaging_tools/generate_utils.py
index 574d7b23eb6d..1990df93dcc8 100644
--- a/tools/azure-sdk-tools/packaging_tools/generate_utils.py
+++ b/tools/azure-sdk-tools/packaging_tools/generate_utils.py
@@ -1,3 +1,4 @@
+from contextlib import suppress
 import json
 import logging
 import os
@@ -126,3 +127,31 @@ def judge_tag_preview(path: str) -> bool:
 
     _LOGGER.info(f'find single api version:{api_version}')
     return 'preview' in api_version
+
+
+def format_samples(sdk_code_path) -> None:
+    generate_sample_path = Path(sdk_code_path) / 'generated_samples'
+    if not generate_sample_path.exists():
+        _LOGGER.info(f'not find generated_samples')
+        return
+
+    try:
+        import black
+    except Exception as e:
+        check_call('pip install black', shell=True)
+        import black
+
+    _BLACK_MODE = black.Mode()
+    _BLACK_MODE.line_length = 120
+    files = generate_sample_path.glob('**/*.py')
+    for path in files:
+        with open(path, 'r') as fr:
+            file_content = fr.read()
+
+        with suppress(black.NothingChanged):
+            file_content = black.format_file_contents(file_content, fast=True, mode=_BLACK_MODE)
+
+        with open(path, 'w') as fw:
+            fw.write(file_content)
+
+    _LOGGER.info(f'format generated_samples successfully')
diff --git a/tools/azure-sdk-tools/setup.py b/tools/azure-sdk-tools/setup.py
index 53c644ce32ba..f04d6eb63994 100644
--- a/tools/azure-sdk-tools/setup.py
+++ b/tools/azure-sdk-tools/setup.py
@@ -10,6 +10,7 @@
     "wheel",
     "Jinja2",
     "MarkupSafe==2.0.1",
+    # black,
     "pytoml",
     "json-delta>=2.0",
     # Tests