diff --git a/pywxdump/dbpreprocess/parsingMSG.py b/pywxdump/dbpreprocess/parsingMSG.py
index 6cf70de..b3a70d9 100644
--- a/pywxdump/dbpreprocess/parsingMSG.py
+++ b/pywxdump/dbpreprocess/parsingMSG.py
@@ -58,6 +58,8 @@ class ParsingMSG(DatabaseBase):
             sql = f"SELECT StrTalker, COUNT(*) FROM MSG GROUP BY StrTalker ORDER BY COUNT(*) DESC;"
 
         result = self.execute_sql(sql)
+        if not result:
+            return {}
         df = pd.DataFrame(result, columns=["wxid", "msg_count"])
         # # 排序
         df = df.sort_values(by="msg_count", ascending=False)
@@ -257,7 +259,8 @@ class ParsingMSG(DatabaseBase):
                 "SELECT localId, IsSender, StrContent, StrTalker, Sequence, Type, SubType,CreateTime,MsgSvrID,DisplayContent,CompressContent,BytesExtra,ROW_NUMBER() OVER (ORDER BY CreateTime ASC) AS id "
                 "FROM MSG ORDER BY CreateTime ASC LIMIT ?,?")
             result1 = self.execute_sql(sql, (start_index, page_size))
-
+        if not result1:
+            return [], []
         data = []
         wxid_list = []
         for row in result1:
diff --git a/pywxdump/dbpreprocess/parsingMediaMSG.py b/pywxdump/dbpreprocess/parsingMediaMSG.py
index 6c4be46..d82504d 100644
--- a/pywxdump/dbpreprocess/parsingMediaMSG.py
+++ b/pywxdump/dbpreprocess/parsingMediaMSG.py
@@ -17,6 +17,8 @@ class ParsingMediaMSG(DatabaseBase):
     def get_audio(self, MsgSvrID, is_play=False, is_wave=False, save_path=None, rate=24000):
         sql = "select Buf from Media where Reserved0=? "
         DBdata = self.execute_sql(sql, (MsgSvrID,))
+        if not DBdata:
+            return False
         if len(DBdata) == 0:
             return False
         data = DBdata[0][0]  # [1:] + b'\xFF\xFF'
diff --git a/pywxdump/dbpreprocess/parsingMicroMsg.py b/pywxdump/dbpreprocess/parsingMicroMsg.py
index 50186b4..87fd45e 100644
--- a/pywxdump/dbpreprocess/parsingMicroMsg.py
+++ b/pywxdump/dbpreprocess/parsingMicroMsg.py
@@ -88,6 +88,8 @@ class ParsingMicroMsg(DatabaseBase):
                               # f"OR A.Reserved6 LIKE '%{word}%' "
                               "ORDER BY A.NickName DESC;")
         result = self.execute_sql(sql)
+        if not result:
+            return []
         for row in result:
             # 获取wxid,昵称，备注，描述，头像
             username, nickname, remark, Alias, describe, headImgUrl = row
@@ -107,6 +109,8 @@ class ParsingMicroMsg(DatabaseBase):
             "FROM ChatInfo C "
             "ORDER BY C.LastReadedCreateTime DESC;")
         result = self.execute_sql(sql)
+        if not result:
+            return []
         for row in result:
             # 获取用户名、昵称、备注和聊天记录数量
             username, LastReadedCreateTime, LastReadedSvrId = row
@@ -133,6 +137,8 @@ class ParsingMicroMsg(DatabaseBase):
                               f"where A.ChatRoomName LIKE '%{roomwxid}%' "
                               "ORDER BY A.ChatRoomName ASC;")
         result = self.execute_sql(sql)
+        if not result:
+            return []
         room_datas = []
         for row in result:
             # 获取用户名、昵称、备注和聊天记录数量