diff --git a/builtin/python/baihu/__init__.py b/builtin/python/baihu/__init__.py
new file mode 100644
index 0000000..a3f9776
--- /dev/null
+++ b/builtin/python/baihu/__init__.py
@@ -0,0 +1,22 @@
+import os
+from .notify import notify as _notify
+
+def notify(title, text):
+    """
+    发送内建通知。
+    会在调用时校验环境变量：BHPKG_NOTIFY_TOKEN, BHPKG_NOTIFY_CHANNEL
+    """
+    _TOKEN = os.environ.get("BHPKG_NOTIFY_TOKEN")
+    _CHANNEL = os.environ.get("BHPKG_NOTIFY_CHANNEL")
+
+    if not _TOKEN or not _CHANNEL:
+        missing = []
+        if not _TOKEN: missing.append("BHPKG_NOTIFY_TOKEN")
+        if not _CHANNEL: missing.append("BHPKG_NOTIFY_CHANNEL")
+        
+        error_msg = f"缺少必要的环境变量以使用 baihu 模块: {', '.join(missing)}。请在白虎面板的任务设置中配置指定的 Key。"
+        raise RuntimeError(error_msg)
+    
+    return _notify(title, text)
+
+__all__ = ['notify']
diff --git a/builtin/python/baihu/notify.py b/builtin/python/baihu/notify.py
new file mode 100644
index 0000000..bd96b77
--- /dev/null
+++ b/builtin/python/baihu/notify.py
@@ -0,0 +1,32 @@
+import os
+import json
+import urllib.request
+
+def notify(title, text, channel_id=None):
+    """
+    发送内建通知。
+    """
+    token = os.environ.get("BHPKG_NOTIFY_TOKEN")
+    url = os.environ.get("BHPKG_NOTIFY_URL", "http://localhost:8052/api/v1/notify/send")
+    default_channel = os.environ.get("BHPKG_NOTIFY_CHANNEL")
+    
+    cid = channel_id or default_channel
+    
+    if not url or not token or not cid:
+        return
+    
+    payload = {
+        "channel_id": cid,
+        "title": title,
+        "text": text
+    }
+    
+    data = json.dumps(payload).encode('utf-8')
+    req = urllib.request.Request(url, data=data, method='POST')
+    req.add_header('Content-Type', 'application/json')
+    req.add_header('notify-token', token)
+    
+    
+    with urllib.request.urlopen(req) as resp:
+        return resp.read().decode('utf-8')
+