diff --git a/llm_web_kit/input/datajson.py b/llm_web_kit/input/datajson.py
index b086579c..49b36d0a 100644
--- a/llm_web_kit/input/datajson.py
+++ b/llm_web_kit/input/datajson.py
@@ -97,8 +97,11 @@ def __to_md(self, exclude_nodes=[]):
         md = md.strip() + self.__text_end  # 加上结尾换行符
         return md
 
-    def to_nlp_md(self):
-        md = self.__to_md(exclude_nodes=DocElementType.MM_NODE_LIST)
+    def to_nlp_md(self, MM_NODE_LIST=[]):
+        if MM_NODE_LIST:
+            md = self.__to_md(exclude_nodes=MM_NODE_LIST)
+        else:
+            md = self.__to_md(exclude_nodes=DocElementType.MM_NODE_LIST)
         return md
 
     def to_mm_md(self):
diff --git a/tests/llm_web_kit/input/test_datajson.py b/tests/llm_web_kit/input/test_datajson.py
index ac0b9ea1..c967e330 100644
--- a/tests/llm_web_kit/input/test_datajson.py
+++ b/tests/llm_web_kit/input/test_datajson.py
@@ -109,13 +109,13 @@ def test_datajson_validation():
 def test_data_json_deepcopy():
     """从一个外部dict构建datajson, 改变datajson，不改变外部dict."""
     d = {'track_id': '32266dfa-c335-45c5-896e-56f057889d28',
-        'url': 'http://mathematica.stackexchange.com/users/1931/ywdr1987?tab=activity&sort=all',
-        'html':'',
-        'page_layout_type': 'forum',
-        'domain': 'mathematica.stackexchange.com',
-        'dataset_name': 'math',
-        'data_source_category': 'HTML',
-        'meta_info': {'warc_headers': {'WARC-IP-Address': '104.16.12.13'}}}
+         'url': 'http://mathematica.stackexchange.com/users/1931/ywdr1987?tab=activity&sort=all',
+         'html': '',
+         'page_layout_type': 'forum',
+         'domain': 'mathematica.stackexchange.com',
+         'dataset_name': 'math',
+         'data_source_category': 'HTML',
+         'meta_info': {'warc_headers': {'WARC-IP-Address': '104.16.12.13'}}}
     copied = copy.deepcopy(d)
     _ = DataJson(copied)
     cl = copied.get('content_list')  # 不该变外部变量d
@@ -146,3 +146,70 @@ def test_datajson_to_dict_immutable():
         # Verify the modifications only affected the dict copy
         assert dict_data[DataJsonKey.DATASET_NAME] == 'modified_dataset'
         assert dict_data[DataJsonKey.CONTENT_LIST][0]['content'] == 'modified content'
+
+
+def test_data_json_to_nlp_md():
+    d = {
+        'track_id': '9fc6d25e-03ef-42a5-9675-7817c2b01936',
+        'url': 'http://boards.fool.com/quoti-think-flegs-watching-what-he-eats-30294220.aspx?sort=username',
+        'html': '',
+        'content_list': [
+            [
+                {
+                    'type': 'paragraph',
+                    'raw_content': '<div class=\"content\"><div class=\"description-wrapper\"><div class=\"container description\"><div class=\"report text-center\"><span class=\"text-muted\">\n\t\t\t\tZiet u iets wat niet hoort of niet klopt?\n\t\t\t</span></div></div></div></div>',
+                    'content': [
+                        {
+                            'c': 'Ziet u iets wat niet hoort of niet klopt?',
+                            't': 'text'
+                        }
+                    ]
+                },
+                {
+                    'type': 'title',
+                    'raw_content': '<h2 class=\"text-center \" data-step=\"4\">Openingstijden</h2>',
+                    'content': {
+                        'title_content': 'Openingstijden',
+                        'level': '2'
+                    }
+                },
+                {
+                    'type': 'table',
+                    'raw_content': '<table class=\"table table-hover\" id=\"table-visitinghours\"><tr class=\"\"><td>\n\t\t\t\tMaandag\n\t\t\t</td><td class=\"text-right\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t-\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</td></tr><tr class=\"\"><td>\n\t\t\t\tDinsdag\n\t\t\t</td><td class=\"text-right\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t-\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</td></tr><tr class=\"\"><td>\n\t\t\t\tWoensdag\n\t\t\t</td><td class=\"text-right\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t-\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</td></tr><tr class=\"\"><td>\n\t\t\t\tDonderdag\n\t\t\t</td><td class=\"text-right\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t-\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</td></tr><tr class=\"\"><td>\n\t\t\t\tVrijdag\n\t\t\t</td><td class=\"text-right\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t-\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</td></tr><tr class=\"\"><td>\n\t\t\t\tZaterdag\n\t\t\t</td><td class=\"text-right\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t-\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</td></tr><tr class=\"\"><td>\n\t\t\t\tZondag\n\t\t\t</td><td class=\"text-right\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t-\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</td></tr></table>',
+                    'content': {
+                        'html': '<table><tr><td>Maandag</td><td>-</td></tr><tr><td>Dinsdag</td><td>-</td></tr><tr><td>Woensdag</td><td>-</td></tr><tr><td>Donderdag</td><td>-</td></tr><tr><td>Vrijdag</td><td>-</td></tr><tr><td>Zaterdag</td><td>-</td></tr><tr><td>Zondag</td><td>-</td></tr></table>',
+                        'is_complex': False,
+                        'table_nest_level': '1'
+                    }
+                },
+                {
+                    'type': 'code',
+                    'raw_content': '<code>frame.open();\nframe.write(html);\nframe.close();\n</code>',
+                    'inline': False,
+                    'content': {
+                        'code_content': 'frame.open();\nframe.write(html);\nframe.close();',
+                        'by': 'tag_pre_code'
+                    }
+                }
+            ]
+        ]
+    }
+
+    def test_default_exclude():
+        datajson = DataJson(d)
+        md = datajson.get_content_list().to_nlp_md()
+        assert 'Ziet u iets wat niet hoort of niet klopt?' in md
+        assert 'Openingstijden' in md
+        assert 'Maandag' in md
+        assert 'frame.open();\nframe.write(html);\nframe.close();' in md
+
+    def test_custom_exclude():
+        datajson = DataJson(d)
+        md = datajson.get_content_list().to_nlp_md(MM_NODE_LIST=['table'])
+        assert 'Ziet u iets wat niet hoort of niet klopt?' in md
+        assert 'Openingstijden' in md
+        assert 'Maandag' not in md
+        assert 'frame.open();\nframe.write(html);\nframe.close();' in md
+
+    test_default_exclude()
+    test_custom_exclude()