diff --git a/Decoder.py b/Decoder.py
index c07dce6..3ef8daf 100644
--- a/Decoder.py
+++ b/Decoder.py
@@ -1,4 +1,6 @@
 import ast
+import glob
+import os
 import threading
 from datetime import datetime
 import multiprocessing as mp
@@ -167,9 +169,11 @@ class Decoder_main(threading.Thread, device_type):
         self.b_design = signal.firwin(65, [bandPass_low / (self.fs/2), bandPass_high / (self.fs/2)], pass_zero=False)  # 设计8-30Hz带通滤波器
         fileName = 'Model_' + datetime.now().strftime('%Y-%m-%d-%H-%M-%S')
         filePath = './online_Models/'
+        for old_pth in glob.glob(os.path.join(filePath, '*.pth')):
+            os.remove(old_pth)
         self.modelPath = ''.join([filePath, fileName, '.pth'])
-        self.mp_data_queue = mp.Queue() #多进程传参队列
-        self.mp_result_queue = mp.Queue() #多进程结果队列
+        self.mp_data_queue = mp.Queue()
+        self.mp_result_queue = mp.Queue()
 
     def preprocess(self, signal_data):
         # # 计算每行的平均值