diff --git a/UI/ProjectManages/ProjectModel.py b/UI/ProjectManages/ProjectModel.py
index 89a54a6..50d5ece 100644
--- a/UI/ProjectManages/ProjectModel.py
+++ b/UI/ProjectManages/ProjectModel.py
@@ -249,12 +249,14 @@ class ProjectButtonDelegate(QItemDelegate):
             return
         self.loginWidget = LoginWidget()
         self.loginWidget.show()
+        lastproType = Globals.getValue('currentProType')
         ProjectManage.switchProject(str(self.parent().model.datas[sender.index[0]][1]), str(self.parent().model.datas[sender.index[0]][4]))
         proType = Globals.getValue('currentProType')
 
-
         if proType in ['0', '1', '2', '3']:
             Globals.getValue('varTable').model.initTable()
+            if lastproType in ['0', '1', '2', '3']:
+                Globals.getValue('varTable').model.refreshComboBox()
         elif proType in ['4']:
             Globals.getValue('HartTable').model.initTable()
         elif proType in ['5']:
diff --git a/UI/VarManages/ModbusModel.py b/UI/VarManages/ModbusModel.py
index 9c28fcf..346ef61 100644
--- a/UI/VarManages/ModbusModel.py
+++ b/UI/VarManages/ModbusModel.py
@@ -194,6 +194,20 @@ class VarTableModel(QAbstractTableModel):
         self.datas[sourceRow], self.datas[destinationChild] = self.datas[destinationChild], self.datas[sourceRow]
         self.table.proxy.invalidate()
 
+    def refreshComboBox(self):
+        for i in range(len(self.datas)):
+            cbRow = str('cb' + str(i) + '5')
+            index = self.index(i, 5)
+            delegate = self.table.itemDelegate(index)
+            comboBox = getattr(delegate, cbRow)
+
+            if self.datas[i][5] in [0, 1]:
+                comboBox.setCurrentIndex(self.datas[i][5])
+            elif self.datas[i][5] in [3, 4]:
+                comboBox.setCurrentIndex(self.datas[i][5] - 1)
+            else:
+                comboBox.setCurrentIndex(-1)
+
 class ModBusTCPSlaveModel(VarTableModel):
     def __init__(self, header, data: list, table = None):
         '''