diff --git a/designer-realize/src/main/java/com/fr/design/actions/columnrow/ColumnRowSizingAction.java b/designer-realize/src/main/java/com/fr/design/actions/columnrow/ColumnRowSizingAction.java
index f7e86d2c03..0903323b80 100644
--- a/designer-realize/src/main/java/com/fr/design/actions/columnrow/ColumnRowSizingAction.java
+++ b/designer-realize/src/main/java/com/fr/design/actions/columnrow/ColumnRowSizingAction.java
@@ -13,6 +13,7 @@ import com.fr.design.dialog.DialogActionAdapter;
 import com.fr.design.mainframe.ElementCasePane;
 import com.fr.design.fun.ReportLengthUNITProvider;
 import com.fr.design.unit.UnitConvertUtil;
+import com.fr.general.ComparatorUtils;
 import com.fr.grid.selection.CellSelection;
 import com.fr.report.elementcase.ElementCase;
 import com.fr.stable.ArrayUtils;
@@ -39,8 +40,8 @@ public abstract class ColumnRowSizingAction extends AbstractColumnRowIndexAction
         		return ColumnRowSizingAction.this.title4UnitInputPane();
         	}
         };
-        UNIT len = getShowLen(report, cs);
-        populateNumberDialog(uPane, len);
+        final UNIT oldLen = getShowLen(report, cs);
+        populateNumberDialog(uPane, oldLen);
 
         final CellSelection finalCS = cs;
         uPane.showSmallWindow(DesignerContext.getDesignerFrame(), new DialogActionAdapter() {
@@ -51,8 +52,10 @@ public abstract class ColumnRowSizingAction extends AbstractColumnRowIndexAction
 					float newHeight = (float) uPane.update();
 					int unitType = DesignerEnvManager.getEnvManager().getReportLengthUnit();
                     ReportLengthUNITProvider lengthUNIT = UnitConvertUtil.parseLengthUNIT(unitType);
-					UNIT len = lengthUNIT.float2UNIT(newHeight);
-					updateAction(report, len, finalCS);
+                    UNIT newLen = lengthUNIT.float2UNIT(newHeight);
+                    if (!ComparatorUtils.equals(oldLen, newLen)) {
+                        updateAction(report, newLen, finalCS);
+                    }
 				} catch (ValueNotChangeException e) {
 					// nothing
 				}