diff --git a/README.md b/README.md
index 39123ef..3e9257f 100644
--- a/README.md
+++ b/README.md
@@ -136,7 +136,7 @@ cd PyWxDump
 python -m pip install -U .
 ```
 
-## 2. 使用方法
+## 2. 使用
 
 ### 2.1 命令行
 
diff --git a/pywxdump/show_chat/main_window.py b/pywxdump/show_chat/main_window.py
index 811a79a..15237e8 100644
--- a/pywxdump/show_chat/main_window.py
+++ b/pywxdump/show_chat/main_window.py
@@ -51,7 +51,8 @@ def get_user_list(MSG_ALL_db_path, MicroMsg_db_path):
 
 def load_base64_audio_data(MsgSvrID, MediaMSG_all_db_path):
     wave_data = read_audio(MsgSvrID, is_wave=True, DB_PATH=MediaMSG_all_db_path)
-
+    if not wave_data:
+        return ""
     video_base64 = base64.b64encode(wave_data).decode("utf-8")
     video_data = f"data:audio/wav;base64,{video_base64}"
     return video_data