diff --git a/prompts.py b/prompts.py
index feb7426..aef9c4a 100644
--- a/prompts.py
+++ b/prompts.py
@@ -420,28 +420,19 @@ BAIKE_PROMPTS = {
     # 输入变量: history_messages, original_query
     # ------------------------------------------------------------------
     "judge_need_retrieval": (
-        "你是一个专业的问题分析助手，请判断用户的问题是否需要检索知识库才能回答。\n"
+        "You are an intent classifier for a knowledge-base QA assistant. Decide whether the user question needs retrieval.\n"
         "\n"
-        "【判断标准】\n"
-        "需要检索的情况：\n"
-        "- 询问特定设备、技术、规程、规范的具体内容\n"
-        "- 需要专业知识或特定数据支持的问题\n"
-        "- 询问故障诊断、维修方法等专业领域问题\n"
-        "- 询问历史事件、法规条款、技术标准等需要查证的内容\n"
+        "Return true when the question asks about documents, files, knowledge-base content, equipment, systems, faults, operations, standards, procedures, meeting notes, database-related materials, or any factual/domain-specific information.\n"
+        "Return false only for pure greetings, thanks, cancellation/confirmation with no substantive question, or a follow-up that can be fully answered from the conversation history alone.\n"
+        "Default rule: when unsure, return true.\n"
         "\n"
-        "不需要检索的情况：\n"
-        "- 简单的问候、寒暄\n"
-        "- 常识性问题（如常识性知识、简单计算等）\n"
-        "- 明确不需要专业知识的问题\n"
-        "- 对之前对话的简单追问，上下文已足够回答\n"
-        "\n"
-        "【对话历史】\n"
+        "Conversation history:\n"
         "{history_messages}\n"
         "\n"
-        "【当前用户问题】\n"
+        "User question:\n"
         "{original_query}\n"
         "\n"
-        "请仅输出 \"true\" 或 \"false\"（不带引号），true 表示需要检索，false 表示不需要检索。"
+        "Output only true or false."
     ),
 
     # ------------------------------------------------------------------