diff --git a/agent/component/retrieval.py b/agent/component/retrieval.py
index 859d65478..218dae969 100644
--- a/agent/component/retrieval.py
+++ b/agent/component/retrieval.py
@@ -96,6 +96,7 @@ class Retrieval(ComponentBase, ABC):
             rerank_mdl = LLMBundle(kbs[0].tenant_id, LLMType.RERANK, self._param.rerank_id)
 
         if kbs:
+            query = re.sub(r"^user[:：\s]*", "", query, flags=re.IGNORECASE)
             kbinfos = settings.retrievaler.retrieval(
                 query,
                 embd_mdl,