diff --git a/src/plugins/nonebot_bison/post/custom_post.py b/src/plugins/nonebot_bison/post/custom_post.py
index 3933b14..c9d8ebd 100644
--- a/src/plugins/nonebot_bison/post/custom_post.py
+++ b/src/plugins/nonebot_bison/post/custom_post.py
@@ -66,6 +66,8 @@ class CustomPost(_CustomPost, AbstractPost):
 
     通过将text/image转换成对应的markdown语法, 生成markdown文本
 
+    理论上text部分可以直接使用markdown语法, 例如 ###123
+
     最后使用htmlrender渲染为图片
     """
 
diff --git a/tests/test_custom_post.py b/tests/test_custom_post.py
new file mode 100644
index 0000000..2072388
--- /dev/null
+++ b/tests/test_custom_post.py
@@ -0,0 +1,28 @@
+import pytest
+from nonebot.adapters.onebot.v11.message import MessageSegment
+from nonebot_bison.post import custom_post
+from nonebug.app import App
+
+
+@pytest.fixture
+def expect_md():
+    return "【Zc】每早合约日替攻略！\n![Iamge](http://i0.hdslb.com/bfs/live/new_room_cover/cf7d4d3b2f336c6dba299644c3af952c5db82612.jpg)\n来源: Bilibili直播 魔法Zc目录\n\n详情: https://live.bilibili.com/3044248\n"
+
+
+def test_gene_md(app: App):
+
+    msg_segments: list[MessageSegment] = []
+    msg_segments.append(MessageSegment.text("【Zc】每早合约日替攻略！"))
+    msg_segments.append(
+        MessageSegment.image(
+            file="http://i0.hdslb.com/bfs/live/new_room_cover/cf7d4d3b2f336c6dba299644c3af952c5db82612.jpg",
+            cache=0,
+        )
+    )
+    msg_segments.append(MessageSegment.text("来源: Bilibili直播 魔法Zc目录\n "))
+    msg_segments.append(MessageSegment.text("详情: https://live.bilibili.com/3044248"))
+
+    cp = custom_post.CustomPost(message_segments=msg_segments)
+    cp_md = cp._generate_md()
+
+    assert cp_md == expect_md()