diff --git a/engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/ExcelLayoutEngine.java b/engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/ExcelLayoutEngine.java
index aa81cc2791..60a0747b23 100644
--- a/engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/ExcelLayoutEngine.java
+++ b/engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/ExcelLayoutEngine.java
@@ -40,6 +40,7 @@
 import org.eclipse.birt.report.engine.content.IReportContent;
 import org.eclipse.birt.report.engine.content.IStyle;
 import org.eclipse.birt.report.engine.content.ITableContent;
+import org.eclipse.birt.report.engine.css.engine.value.css.CSSConstants;
 import org.eclipse.birt.report.engine.emitter.EmitterUtil;
 import org.eclipse.birt.report.engine.emitter.excel.BookmarkDef;
 import org.eclipse.birt.report.engine.emitter.excel.Data;
@@ -377,7 +378,7 @@ public void addCell(ICellContent cellcontent, int col, int colSpan, int rowSpan,
 			}
 			int diagonalNumber = cellcontent.getDiagonalNumber();
 			StyleEntry cellStyleEntry = null;
-			if (diagonalNumber != 0) {
+			if (diagonalNumber != 0 && !style.getDiagonalStyle().equalsIgnoreCase(CSSConstants.CSS_NONE_VALUE)) {
 				String diagonalColor = cellcontent.getDiagonalColor();
 				String diagonalStyle = cellcontent.getDiagonalStyle();
 				int diagonalWidth = PropertyUtil.getDimensionValue(cellcontent, cellcontent.getDiagonalWidth(),