diff --git a/PPOCRLabel/PPOCRLabel.py b/PPOCRLabel/PPOCRLabel.py
index 5c89e6f894637368bd54178d738afe05fbd8aa0c..2d5f3c158edfcfcb09093d3f51e8af0ab9e83173 100644
--- a/PPOCRLabel/PPOCRLabel.py
+++ b/PPOCRLabel/PPOCRLabel.py
@@ -1289,13 +1289,13 @@ class MainWindow(QMainWindow):
     def scrollRequest(self, delta, orientation):
         units = - delta / (8 * 15)
         bar = self.scrollBars[orientation]
-        bar.setValue(bar.value() + bar.singleStep() * units)
+        bar.setValue((int)(bar.value()) + (int)(bar.singleStep() * units)) #图像用鼠标上下滑动取值需为整数
 
     def setZoom(self, value):
         self.actions.fitWidth.setChecked(False)
         self.actions.fitWindow.setChecked(False)
         self.zoomMode = self.MANUAL_ZOOM
-        self.zoomWidget.setValue(value)
+        self.zoomWidget.setValue((int)(value))   #图像缩放取值需为整数
 
     def addZoom(self, increment=10):
         self.setZoom(self.zoomWidget.value() + increment)
@@ -1339,7 +1339,7 @@ class MainWindow(QMainWindow):
         # zoom in
         units = delta / (8 * 15)
         scale = 10
-        self.addZoom(scale * units)
+        self.addZoom((int)(scale * units))   #因units不是整数，需要取整，图像放大函数
 
         # get the difference in scrollbar values
         # this is how far we can move
@@ -1350,8 +1350,8 @@ class MainWindow(QMainWindow):
         new_h_bar_value = h_bar.value() + move_x * d_h_bar_max
         new_v_bar_value = v_bar.value() + move_y * d_v_bar_max
 
-        h_bar.setValue(new_h_bar_value)
-        v_bar.setValue(new_v_bar_value)
+        h_bar.setValue((int)(new_h_bar_value))  #因move_x的值不是整数，需要取整
+        v_bar.setValue((int)(new_v_bar_value))  #因move_y的值不是整数，需要取整
 
     def setFitWindow(self, value=True):
         if value:
diff --git a/PPOCRLabel/libs/canvas.py b/PPOCRLabel/libs/canvas.py
index e6cddf13ede235fa193daf84d4395d77c371049a..3f0bbeec1e075005d899d03ae5bd2e5f8f686025 100644
--- a/PPOCRLabel/libs/canvas.py
+++ b/PPOCRLabel/libs/canvas.py
@@ -588,7 +588,7 @@ class Canvas(QWidget):
             p.setPen(self.drawingRectColor)
             brush = QBrush(Qt.BDiagPattern)
             p.setBrush(brush)
-            p.drawRect(leftTop.x(), leftTop.y(), rectWidth, rectHeight)
+            p.drawRect((int)(leftTop.x()), (int)(leftTop.y()), (int)(rectWidth), (int)(rectHeight))   #标注图像的画标注框的函数，需取整
 
 
         # ADD：
@@ -606,8 +606,8 @@ class Canvas(QWidget):
 
         if self.drawing() and not self.prevPoint.isNull() and not self.outOfPixmap(self.prevPoint):
             p.setPen(QColor(0, 0, 0))
-            p.drawLine(self.prevPoint.x(), 0, self.prevPoint.x(), self.pixmap.height())
-            p.drawLine(0, self.prevPoint.y(), self.pixmap.width(), self.prevPoint.y())
+            p.drawLine((int)(self.prevPoint.x()), 0, (int)(self.prevPoint.x()), (int)(self.pixmap.height()))  #标注图像的画标注框线条的函数，需取整
+            p.drawLine(0, (int)(self.prevPoint.y()), (int)(self.pixmap.width()), (int)(self.prevPoint.y()))   #标注图像的画标注框线条的函数，需取整
 
         self.setAutoFillBackground(True)
         if self.verified: