diff --git a/docutranslate/glossary/glossary.py b/docutranslate/glossary/glossary.py
index d71cea4..33d57c7 100644
--- a/docutranslate/glossary/glossary.py
+++ b/docutranslate/glossary/glossary.py
@@ -1,6 +1,7 @@
 # SPDX-FileCopyrightText: 2025 QinHan
 # SPDX-License-Identifier: MPL-2.0
 import csv
+import re
 from io import StringIO
 
 from docutranslate.ir.document import Document
@@ -12,14 +13,19 @@ class Glossary:
 
     def update(self, update_dict: dict[str:str]):
         for src, dst in update_dict.items():
-            if src not in self.glossary_dict:
-                self.glossary_dict[src] = dst
+            if src.strip() not in self.glossary_dict:
+                self.glossary_dict[src.strip()] = dst
 
     def append_system_prompt(self, text: str):
         flag = False
-        prompt = "\nHere is the reference glossary:\n"
+        prompt = """
+        Please refer to the glossary for the translation of terms that appear in the glossary.
+        Here is the reference glossary:
+        """
         for src, dst in self.glossary_dict.items():
-            if src.lower().strip() in text.lower():
+            text=re.sub(r'\s+', '', text)#去除所有空白字符
+            src=re.sub(r'\s+', '', src)#去除所有空白字符
+            if src in text:
                 prompt += f"{src}=>{dst}\n"
                 flag = True
         prompt += "Glossary ends\n"