diff --git a/backend/app/api/websocket.py b/backend/app/api/websocket.py
index 4dbd3836..1f444cd0 100644
--- a/backend/app/api/websocket.py
+++ b/backend/app/api/websocket.py
@@ -233,7 +233,7 @@ async def call_llm(
         _warn_threshold_96 = _max_tool_rounds - 2
         if round_i == _warn_threshold_80:
             api_messages.append(LLMMessage(
-                role="system",
+                role="user",
                 content=(
                     f"⚠️ 你已使用 {round_i}/{_max_tool_rounds} 轮工具调用。"
                     "如果当前任务尚未完成，请尽快保存进度到 focus.md，"
@@ -242,7 +242,7 @@ async def call_llm(
             ))
         elif round_i == _warn_threshold_96:
             api_messages.append(LLMMessage(
-                role="system",
+                role="user",
                 content=f"🚨 仅剩 2 轮工具调用。请立即保存进度到 focus.md 并设置续接触发器。",
             ))