diff --git a/src/models/signals.py b/src/models/signals.py
index e602801..f6c4a5c 100644
--- a/src/models/signals.py
+++ b/src/models/signals.py
@@ -7,6 +7,7 @@
 依赖:
     此模块不应依赖除 models.base.utils 外的任何项目代码
 """
+import threading
 import time
 
 from PyQt5.QtCore import QObject, pyqtSignal
@@ -36,6 +37,7 @@ class Signals(QObject):
     # endregion
     def __init__(self):
         super().__init__()
+        self.log_lock = threading.Lock()
         self.detail_log_list = []
         self.stop = False
 
@@ -43,17 +45,15 @@ def add_log(self, *text):
         if self.stop:
             raise '手动停止刮削'
         try:
-            self.detail_log_list.append(f" ⏰ {time.strftime('%H:%M:%S', time.localtime())} {' '.join(text)}")
+            with self.log_lock:
+                self.detail_log_list.append(f" ⏰ {time.strftime('%H:%M:%S', time.localtime())} {' '.join(text)}")
         except:
             pass
 
     def get_log(self):
-        text = ''
-        if self.detail_log_list:
-            a = len(self.detail_log_list)
-            text = '\n'.join(self.detail_log_list[:a])
-            for _ in range(a):
-                self.detail_log_list.pop(0)
+        with self.log_lock:
+            text = '\n'.join(self.detail_log_list)
+            self.detail_log_list = []
         return text
 
     def show_traceback_log(self, text):