diff --git a/ecg_label_check.py b/ecg_label_check.py
index bf9cbcc..cb5b832 100644
--- a/ecg_label_check.py
+++ b/ecg_label_check.py
@@ -313,75 +313,82 @@ class MainWindow(QMainWindow, Ui_MainWindow):
                 self.msgBox.exec()
 
     def slot_btn_dataInput(self):
-        info("Inputing Data...")
-        self.textBrowser_update("提示:开始导入数据")
-        MainWindow.setWindowTitle(self, QCoreApplication.translate("MainWindow",
-                                                                   "ECG_Label_Check - Data Path: " + self.lineEdit_rootpath.text()))
-        # 导入数据
-        self.label1 = np.array([])
-        self.label2 = np.array([])
-        file = open(str(self.lineEdit_data1path.text()), 'r')
-        self.data1 = file.readlines()
-        self.data1 = list(map(float, self.data1))
-        self.data2 = self.data1
-        self.data1 = self.data_preprocess(self.data1, int(self.lineEdit_data1_fillterNum.text()),
-                                          float(self.lineEdit_data1_fillterFrequency_min.text()),
-                                          float(self.lineEdit_data1_fillterFrequency_max.text()),
-                                          float(self.lineEdit_frequency.text()))
-        self.data2 = self.data_preprocess(self.data2, int(self.lineEdit_data2_fillterNum.text()),
-                                          float(self.lineEdit_data2_fillterFrequency_min.text()),
-                                          float(self.lineEdit_data2_fillterFrequency_max.text()),
-                                          float(self.lineEdit_frequency.text()))
-        file = open(str(self.lineEdit_label1path.text()), 'r')
-        self.label1 = np.array(file.readlines())
-        self.label2 = self.label1
-        self.data1 = self.data1.astype(np.float64)
-        self.data2 = self.data2.astype(np.float64)
-        self.label1 = self.label1.astype(np.int64)
-        self.label2 = self.label2.astype(np.int64)
-        self.points_y_1 = [self.data1[x] for x in self.label1]
-        self.points_y_2 = [self.data2[x] for x in self.label2]
+        if self.lineEdit_data1path.text() != "" and self.lineEdit_data2path.text() != "" and self.lineEdit_label1path.text() != "" and self.lineEdit_label2path.text() != "":
+            info("Inputing Data...")
+            self.textBrowser_update("提示:开始导入数据")
+            MainWindow.setWindowTitle(self, QCoreApplication.translate("MainWindow",
+                                                                       "ECG_Label_Check - Data Path: " + self.lineEdit_rootpath.text()))
+            # 导入数据
+            self.label1 = np.array([])
+            self.label2 = np.array([])
+            file = open(str(self.lineEdit_data1path.text()), 'r')
+            self.data1 = file.readlines()
+            self.data1 = list(map(float, self.data1))
+            self.data2 = self.data1
+            self.data1 = self.data_preprocess(self.data1, int(self.lineEdit_data1_fillterNum.text()),
+                                              float(self.lineEdit_data1_fillterFrequency_min.text()),
+                                              float(self.lineEdit_data1_fillterFrequency_max.text()),
+                                              float(self.lineEdit_frequency.text()))
+            self.data2 = self.data_preprocess(self.data2, int(self.lineEdit_data2_fillterNum.text()),
+                                              float(self.lineEdit_data2_fillterFrequency_min.text()),
+                                              float(self.lineEdit_data2_fillterFrequency_max.text()),
+                                              float(self.lineEdit_frequency.text()))
+            file = open(str(self.lineEdit_label1path.text()), 'r')
+            self.label1 = np.array(file.readlines())
+            self.label2 = self.label1
+            self.data1 = self.data1.astype(np.float64)
+            self.data2 = self.data2.astype(np.float64)
+            self.label1 = self.label1.astype(np.int64)
+            self.label2 = self.label2.astype(np.int64)
+            self.points_y_1 = [self.data1[x] for x in self.label1]
+            self.points_y_2 = [self.data2[x] for x in self.label2]
 
-        # 更新tableWidget
-        self.tableWidget_label1.setRowCount(len(self.label1))
-        for row, value in enumerate(self.label1):
-            item = QTableWidgetItem(str(value).strip())
-            self.tableWidget_label1.setItem(row, 0, item)
-        self.tableWidget_label2.setRowCount(self.label2.__len__())
-        for row, value in enumerate(self.label2):
-            item = QTableWidgetItem(str(value).strip())
-            self.tableWidget_label2.setItem(row, 0, item)
-        self.groupBox_labelDisplay.setEnabled(True)
+            # 更新tableWidget
+            self.tableWidget_label1.setRowCount(len(self.label1))
+            for row, value in enumerate(self.label1):
+                item = QTableWidgetItem(str(value).strip())
+                self.tableWidget_label1.setItem(row, 0, item)
+            self.tableWidget_label2.setRowCount(self.label2.__len__())
+            for row, value in enumerate(self.label2):
+                item = QTableWidgetItem(str(value).strip())
+                self.tableWidget_label2.setItem(row, 0, item)
+            self.groupBox_labelDisplay.setEnabled(True)
 
-        # 更新界面
-        self.groupBox_inputSetting.setEnabled(False)
-        self.groupBox_autoplay.setEnabled(True)
-        self.pushButton_outputLabel.setEnabled(True)
-        self.figToolbar.action_Label_Single.setEnabled(True)
-        self.figToolbar.action_Label_Multiple.setEnabled(True)
-        for action in self.figToolbar._actions.values():
-            action.setEnabled(True)
+            # 更新界面
+            self.groupBox_inputSetting.setEnabled(False)
+            self.groupBox_autoplay.setEnabled(True)
+            self.pushButton_outputLabel.setEnabled(True)
+            self.figToolbar.action_Label_Single.setEnabled(True)
+            self.figToolbar.action_Label_Multiple.setEnabled(True)
+            for action in self.figToolbar._actions.values():
+                action.setEnabled(True)
 
-        # 更新信息
-        self.label_data1_length.setText(str(len(self.data1)))
-        self.label_data2_length.setText(str(len(self.data2)))
-        self.label_label1_length.setText(str(len(self.label1)))
-        self.label_label2_length.setText(str(len(self.label2)))
+            # 更新信息
+            self.label_data1_length.setText(str(len(self.data1)))
+            self.label_data2_length.setText(str(len(self.data2)))
+            self.label_label1_length.setText(str(len(self.label1)))
+            self.label_label2_length.setText(str(len(self.label2)))
 
-        # 更新画框
-        self.figure.clear()
-        self.plot_data_and_label()
+            # 更新画框
+            self.figure.clear()
+            self.plot_data_and_label()
 
-        # 连接画框中的槽函数
-        # Connect mouse events
-        self.canvas.mpl_connect('motion_notify_event', self.on_motion)
+            # 连接画框中的槽函数
+            # Connect mouse events
+            self.canvas.mpl_connect('motion_notify_event', self.on_motion)
 
-        # 保存路径文件是否存在的检查
-        if not Path(self.lineEdit_savepath.text()).exists():
-            Path(self.lineEdit_savepath.text()).touch()
+            # 保存路径文件是否存在的检查
+            if not Path(self.lineEdit_savepath.text()).exists():
+                Path(self.lineEdit_savepath.text()).touch()
 
-        info("Finished Input Data.")
-        self.textBrowser_update("提示:导入数据完成")
+            info("Finished Input Data.")
+            self.textBrowser_update("提示:导入数据完成")
+        else:
+            info("Failed to Input Data!")
+            self.textBrowser_update("操作:导入数据失败")
+            self.msgBox.setText("导入失败,请正确输入路径")
+            self.msgBox.setIcon(QMessageBox.Critical)
+            self.msgBox.exec()
 
     def slot_radioBtn_inputMode_auto(self):
         self.pushButton_rootpath_open.setEnabled(True)