diff --git a/工具v4/tool_panel.py b/工具v4/tool_panel.py
index 2f0016be..30d0cfbc 100644
--- a/工具v4/tool_panel.py
+++ b/工具v4/tool_panel.py
@@ -1,6 +1,5 @@
 from PySide6.QtWidgets import QWidget, QApplication, QFileDialog, QMainWindow
 from Ui_tool_panel import Ui_MainWindow
-from PySide6.QtCore import Signal, Slot
 from 寻找空闲题号 import MyWindow_kxth
 from database_tools_2 import *
 
@@ -14,10 +13,13 @@ class MyWindow(QMainWindow,Ui_MainWindow):
         self.SelectTIKUTEST()
         self.pushButton_tiku.clicked.connect(self.SelectTIKU)
         self.pushButton_tikutest.clicked.connect(self.SelectTIKUTEST) #以上为设置当前数据库的两个按钮
-        tab_kxth = MyWindow_kxth(self.database) #传递参数时有问题, 未能动态更新
-        for i in range(3):
+        
+        for i in range(3): #删去luru面板的原有三个项目
             self.tabWidget_luru.removeTab(0)
+        
+        tab_kxth = MyWindow_kxth(self.database) 
         self.tabWidget_luru.addTab(tab_kxth,"寻找空闲题号")
+    
     def SelectTIKU(self):
         self.pushButton_tiku.setStyleSheet("background-color: green; font-weight: bold;") #绿色背景粗体
         self.pushButton_tikutest.setStyleSheet("") #恢复原有背景, 取消粗体