diff --git a/src/main/java/cokr/xit/base/docs/xls/CellDef.java b/src/main/java/cokr/xit/base/docs/xls/CellDef.java
index 3955fc3..31c502f 100644
--- a/src/main/java/cokr/xit/base/docs/xls/CellDef.java
+++ b/src/main/java/cokr/xit/base/docs/xls/CellDef.java
@@ -134,6 +134,7 @@ public class CellDef {
 	 */
 	public CellDef setWidth(int width) {
 		this.width = width;
+		setWidth();
 		return this;
 	}
 
@@ -150,6 +151,12 @@ public class CellDef {
 	 */
 	public CellDef setValue(Object value) {
 		this.value = value;
+		setWidth();
 		return this;
 	}
+
+	private void setWidth() {
+		if (value instanceof Style style)
+			style.width(width);
+	}
 }
\ No newline at end of file
diff --git a/src/main/java/cokr/xit/base/docs/xls/Style.java b/src/main/java/cokr/xit/base/docs/xls/Style.java
index ab4e740..c31d773 100644
--- a/src/main/java/cokr/xit/base/docs/xls/Style.java
+++ b/src/main/java/cokr/xit/base/docs/xls/Style.java
@@ -51,6 +51,10 @@ public class Style {
 	private Font font;
 	private String dataFormat;
 
+	public int width() {
+		return width != null ? width : 0;
+	}
+
 	/**열의 폭을 설정한다.
 	 * @param chars 열의 폭. 한번에 보여지는 문자수
 	 * @return 현재 Style
@@ -60,6 +64,10 @@ public class Style {
 		return this;
 	}
 
+	public short height() {
+		return height != null ? height : 0;
+	}
+
 	/**행의 높이를 설정한다.
 	 * @param height 행의 높이
 	 * @return 현재 Style
diff --git a/src/main/java/cokr/xit/base/docs/xls/XLSWriter.java b/src/main/java/cokr/xit/base/docs/xls/XLSWriter.java
index b4f5016..c223b4f 100644
--- a/src/main/java/cokr/xit/base/docs/xls/XLSWriter.java
+++ b/src/main/java/cokr/xit/base/docs/xls/XLSWriter.java
@@ -5,6 +5,7 @@ import java.io.FileOutputStream;
 import java.io.OutputStream;
 import java.util.Collections;
 import java.util.Date;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -275,6 +276,16 @@ public class XLSWriter extends XLS {
 			if (style.dataFormat() != null) {
 				cellStyle.setDataFormat(workbook.createDataFormat().getFormat(style.dataFormat()));
 			}
+
+			int width = style.width();
+			if (width > 0) {
+				int column = cell.getColumnIndex();
+				worksheet.setColumnWidth(column, width * 256);
+			}
+
+			short height = style.height();
+			if (height > 0)
+				row.setHeight(height);
 		}
 		return cellStyle;
 	}
@@ -298,7 +309,7 @@ public class XLSWriter extends XLS {
 	 */
 	public XLSWriter trackWidth(int... cols) {
 		if (!isEmpty(cols))
-			worksheet.trackColumnsForAutoSizing(trackWidths = IntStream.of(cols).boxed().collect(Collectors.toSet()));
+			worksheet.trackColumnsForAutoSizing(trackWidths = IntStream.of(cols).boxed().collect(Collectors.toCollection(LinkedHashSet<Integer>::new)));
 		return this;
 	}
 
@@ -342,6 +353,8 @@ public class XLSWriter extends XLS {
 
 	@Override
 	protected void clear(boolean all) {
+		if (trackWidths != null)
+			worksheet.untrackColumnsForAutoSizing(trackWidths);
 		super.clear(all);
 		trackWidths = null;
 	}