diff --git a/UI/VarManages/ModbusModel.py b/UI/VarManages/ModbusModel.py
index 4be62f5..9c28fcf 100644
--- a/UI/VarManages/ModbusModel.py
+++ b/UI/VarManages/ModbusModel.py
@@ -58,6 +58,8 @@ class VarTableModel(QAbstractTableModel):
 
     def initTable(self):
         self.datas = []
+
+        self.table.parent.initIcon()
         proType = Globals.getValue('currentProType')
    
         if proType in ['1', '2', '3', '0']:
@@ -409,11 +411,12 @@ class VarButtonDelegate(QItemDelegate):
         model.remove_row(sender.index[0])
 
     def trend_action(self):
-        sender = self.sender()
         model = self.parent().model
-        name = str(model.datas[sender.index[0]][3])
-        trend = ActualTrend(varName = name)
-        trend.show()
+        if model.table.parent._isPopenOpen:
+            sender = self.sender()
+            name = str(model.datas[sender.index[0]][3])
+            trend = ActualTrend(varName = name)
+            trend.show()
 
 class ModbusTypeBox(VarButtonDelegate):
     def __init__(self, parent=None):
diff --git a/UI/VarManages/VarTable.py b/UI/VarManages/VarTable.py
index e84455f..47028c6 100644
--- a/UI/VarManages/VarTable.py
+++ b/UI/VarManages/VarTable.py
@@ -76,6 +76,7 @@ class CheckBoxHeader(QHeaderView):
 class VarTableView(QTableView):
     def __init__(self, parent=None):
         super(VarTableView, self).__init__(parent)
+        self.parent = parent
         self.setHeader()
         self.setupUi()
 
diff --git a/UI/VarManages/VarWidget.py b/UI/VarManages/VarWidget.py
index e818535..c47b4a6 100644
--- a/UI/VarManages/VarWidget.py
+++ b/UI/VarManages/VarWidget.py
@@ -64,7 +64,7 @@ class VarWidgets(QtWidgets.QWidget):
         self.startProtocolBtn.setIconSize(QSize(22, 22))
         self.startProtocolBtn.clicked.connect(self.startProtocol)
 
-        self.varView = VarTableView()
+        self.varView = VarTableView(self)
         self.varView.setObjectName('varView')
         self.proxy = QtCore.QSortFilterProxyModel(self)
         self.proxy.setSourceModel(self.varView.model)
@@ -293,6 +293,11 @@ class VarWidgets(QtWidgets.QWidget):
             self.startProtocolBtn.setText('开始通讯')
             self.startProtocolBtn.setIcon(QIcon('static/startProtocol.png'))
 
+    def initIcon(self):
+        self._isPopenOpen = False
+        self.startProtocolBtn.setText('开始通讯')
+        self.startProtocolBtn.setIcon(QIcon('static/startProtocol.png'))
+
 
 class HartWidgets(VarWidgets):
     def __init__(self, parent=None):