diff --git a/designer-realize/src/main/java/com/fr/grid/GridUI.java b/designer-realize/src/main/java/com/fr/grid/GridUI.java
index 3ca89fc01..62927647a 100644
--- a/designer-realize/src/main/java/com/fr/grid/GridUI.java
+++ b/designer-realize/src/main/java/com/fr/grid/GridUI.java
@@ -300,6 +300,8 @@ public class GridUI extends ComponentUI {
 
         private int resolution;
 
+        private static  final double THRESHOLD = 1.0E-4D;
+
         DrawLineHelper(int startIndex, int endIndex, boolean showGridLine,
                        boolean showPaginateLine, DynamicUnitList sizeList, double paperPaintSize,
                        List paginateLineList, int resolution) {
@@ -315,7 +317,7 @@ public class GridUI extends ComponentUI {
         }
 
         protected void iterateStart2End(Graphics2D g2d) {
-            double tmpSize = 0, paperSumSize = 0, sumSize = 0;
+            float tmpSize = 0, paperSumSize = 0, sumSize = 0;
             for (int i = 0; i <= endIndex; i++) {
                 // denny: 开始
                 if (i == 0) {
@@ -323,7 +325,7 @@ public class GridUI extends ComponentUI {
 
                     // denny: 增加从0到Grid左边被hide的列宽
                     for (int k = 0; k < startIndex; k++) {
-                        tmpSize = sizeList.get(k).toPixD(resolution);
+                        tmpSize = sizeList.get(k).toPixF(resolution);
 
                         paperSumSize += tmpSize;
                         if (paperSumSize >= paperPaintSize) {
@@ -333,7 +335,7 @@ public class GridUI extends ComponentUI {
                 }
 
                 // adjust height.
-                tmpSize = sizeList.get(i).toPixD(resolution);
+                tmpSize = sizeList.get(i).toPixF(resolution);
                 paperSumSize += tmpSize;
 
                 if (showGridLine) {// paint line.
@@ -342,7 +344,7 @@ public class GridUI extends ComponentUI {
                 }
 
                 // paint paper margin line.
-                if (showPaginateLine && paperSumSize - paperPaintSize > 1.0E-7D) {
+                if (showPaginateLine && paperSumSize - paperPaintSize > THRESHOLD) {
                     paginateLineList.add(getPaginateLine2D((int) sumSize));
                     paperSumSize = tmpSize;
                 }