diff --git a/core/pydantic_ai_agent_v2.py b/core/pydantic_ai_agent_v2.py
index 6785544..36b89df 100644
--- a/core/pydantic_ai_agent_v2.py
+++ b/core/pydantic_ai_agent_v2.py
@@ -10,6 +10,7 @@ from pydantic_ai.models.openai import OpenAIChatModel
 from pydantic_ai.providers.openai import OpenAIProvider
 from core.schema import StandardMessage, StandardResponse
 from core.agent_tools import register_agent_tools, TransferSuccessException
+from services.service_wecom_bot import wecom_bot_service
 
 logger = logging.getLogger("cs_agent")
 
@@ -126,6 +127,46 @@ def _clip(text: str, limit: int = 1200) -> str:
     return f"{text[:limit]}...(截断, 共{len(text)}字)"
 
 
+async def _notify_brain_fallback(
+    msg: StandardMessage,
+    error: Exception,
+    history_messages: Optional[List[Dict[str, Any]]] = None,
+) -> None:
+    history_messages = history_messages or []
+    recent_lines: List[str] = []
+    for item in history_messages[-3:]:
+        role = str(item.get("role") or "").strip() or "unknown"
+        content = _clip(str(item.get("content") or "").replace("\r", " ").replace("\n", " "), 80)
+        if content:
+            recent_lines.append(f"{role}: {content}")
+
+    current_input = _clip(str(msg.content or "").replace("\r", " ").replace("\n", " "), 200)
+    image_count = len(getattr(msg, "image_urls", None) or [])
+    lines = [
+        "【AI兜底告警】",
+        f"店铺：{msg.acc_id or '-'}",
+        f"客户：{msg.user_id or '-'}",
+        f"消息类型：{getattr(msg, 'msg_type', '-')}",
+        f"图片数：{image_count}",
+        f"当前消息：{current_input or '-'}",
+        f"错误：{_clip(str(error), 300)}",
+    ]
+    if recent_lines:
+        lines.append("最近上下文：")
+        lines.extend(recent_lines)
+
+    try:
+        ok = await wecom_bot_service.send_text("\n".join(lines))
+        if ok:
+            logger.info(f"[Brain Fallback Alert] 已发送企业微信告警 user={msg.user_id} acc={msg.acc_id}")
+        else:
+            logger.warning(f"[Brain Fallback Alert] 企业微信告警发送失败 user={msg.user_id} acc={msg.acc_id}")
+    except Exception as notify_err:
+        logger.warning(
+            f"[Brain Fallback Alert] 企业微信告警异常 user={msg.user_id} acc={msg.acc_id}: {notify_err}"
+        )
+
+
 def _fmt_time(ts: Any) -> str:
     s = str(ts or "").strip()
     if not s:
@@ -531,4 +572,5 @@ class CustomerServiceBrain:
 
         except Exception as e:
             logger.error(f"[Brain Error]: {e}")
+            await _notify_brain_fallback(msg, e, history)
             return StandardResponse(reply_content="好哒，我在看图，稍等回你哈。", metadata={"acc_id": msg.acc_id})