diff --git a/pipeline_bidding/bid_flow.py b/pipeline_bidding/bid_flow.py
index 44b6a52..672949b 100644
--- a/pipeline_bidding/bid_flow.py
+++ b/pipeline_bidding/bid_flow.py
@@ -336,6 +336,7 @@ def start_poller():
     async def _bid_poller(app):
         async def _loop():
             db, dbname = get_db()
+            POLLER_STATE["last_error"] = ""
             while True:
                 try:
                     async def _once():
@@ -363,6 +364,11 @@ def start_poller():
                     logger.warning("bid_poller error/timeout: %s", str(e)[:200])
                 await asyncio.sleep(POLL_INTERVAL)
 
+        try:
+            from appPublic.log import debug as _dbg0
+            _dbg0("bid_flow poller handler invoked, creating loop task")
+        except Exception:
+            pass
         asyncio.create_task(_loop())
         try:
             from appPublic.log import debug as _dbg
diff --git a/pipeline_bidding/init.py b/pipeline_bidding/init.py
index 1a50309..604d2e2 100644
--- a/pipeline_bidding/init.py
+++ b/pipeline_bidding/init.py
@@ -46,7 +46,13 @@ def load_pipeline_bidding():
     if mode in ("all", "worker"):
         try:
             from .bid_flow import start_poller
-            start_poller()
+            r = start_poller()
+            try:
+                from appPublic.log import debug as _dbg
+                _dbg("[pipeline_bidding] poller register result: %s (PIPELINE_MODE=%s)" % (r, mode))
+            except Exception:
+                pass
+            logger.info("[pipeline_bidding] poller register: %s (mode=%s)", r, mode)
         except Exception as e:
             logger.warning("[pipeline_bidding] poller 启动失败: %s", str(e)[:200])
             ok = False