diff --git a/docutranslate/agents/markdown_agent.py b/docutranslate/agents/markdown_agent.py
index 020afd0..d4f60ff 100644
--- a/docutranslate/agents/markdown_agent.py
+++ b/docutranslate/agents/markdown_agent.py
@@ -49,4 +49,4 @@ Output:
 $$1+1=2$$
 \\((c_0,c_1,c_2^2)\\)是一个坐标。"""
         if config.custom_prompt:
-            self.system_prompt += "\n# 重要规则或背景【非常重要】\n" + config.custom_prompt + '\n'
+            self.system_prompt += "\n# Important rules or background\n" + config.custom_prompt + '\n'
diff --git a/docutranslate/agents/segments_agent.py b/docutranslate/agents/segments_agent.py
index c68878e..f8ec5c8 100644
--- a/docutranslate/agents/segments_agent.py
+++ b/docutranslate/agents/segments_agent.py
@@ -44,7 +44,7 @@ Output
 Warning: Never wrap the entire JSON object in quotes to make it a single string. Never wrap the JSON text in ```.
 """
         if config.custom_prompt:
-            self.system_prompt += "\n# 重要规则或背景【非常重要】\n" + config.custom_prompt + '\n'
+            self.system_prompt += "\n# Important rules or background for segments for translation\n" + config.custom_prompt + '\n'
 
     def _result_handler(self, result: str, origin_prompt: str, logger: Logger):
         try: