diff --git a/Excel.go b/Excel.go
index b0c175b..959c4ae 100644
--- a/Excel.go
+++ b/Excel.go
@@ -9,32 +9,6 @@ import (
 	"github.com/xuri/excelize/v2"
 )
 
-// func WriteExcel(excelFile, sheetName string, table [][]string, password *string) error {
-// 	var f *excelize.File
-// 	var err error
-// 	if f, err = excelize.OpenFile(excelFile, excelize.Options{Password: u.String(password)}); err != nil {
-// 		f = excelize.NewFile()
-// 	}
-// 	if sheetName == "" {
-// 		sheetName = "Sheet1"
-// 	}
-// 	if sheetName >= "0" && sheetName <= "9" {
-// 		sheetName = f.GetSheetName(u.Int(sheetName))
-// 	}
-
-// 	for y, row := range table {
-// 		for x, v := range row {
-// 			_ = f.SetCellStr(sheetName, MakeCellID(x, y), v)
-// 		}
-// 	}
-// 	if err == nil {
-// 		err = f.Save()
-// 	} else {
-// 		err = f.SaveAs(excelFile, excelize.Options{Password: u.String(password)})
-// 	}
-// 	return err
-// }
-
 type Excel struct {
 	filename string
 	password string
@@ -67,25 +41,16 @@ func (xls *Excel) Save(filename, password *string) error {
 	return xls.excel.SaveAs(xls.filename, excelize.Options{Password: xls.password})
 }
 
+func (xls *Excel) WriteToBuffer() ([]byte, error) {
+	buf, err := xls.excel.WriteToBuffer()
+	return buf.Bytes(), err
+}
+
 var isIntMatcher = regexp.MustCompile(`^\d{1,8}$`)
 var isFloatMatcher = regexp.MustCompile(`^[\d.]{1,8}$`)
 
 func (xls *Excel) Set(sheetName string, table [][]any, start, end *string) error {
-	if sheetName == "" {
-		sheetName = "Sheet1"
-	}
-	if isIntMatcher.MatchString(sheetName) {
-		sheetName = xls.excel.GetSheetName(u.Int(sheetName))
-	} else {
-		if idx, err := xls.excel.GetSheetIndex(sheetName); err != nil || idx == -1 {
-			if _, err = xls.excel.NewSheet(sheetName); err != nil {
-				return err
-			}
-		} else {
-			return err
-		}
-	}
-
+	sheetName = xls.GetSheetName(sheetName)
 	startX, startY := ParseCellID(u.String(start))
 	endX, endY := ParseCellID(u.String(end))
 	for y, row := range table {
@@ -106,15 +71,71 @@ func (xls *Excel) Set(sheetName string, table [][]any, start, end *string) error
 	return nil
 }
 
+func (xls *Excel) RemoveSheet(sheetName string) error {
+	sheetName = xls.GetSheetName(sheetName)
+	return xls.excel.DeleteSheet(sheetName)
+}
+
 func (xls *Excel) Sheets() []string {
 	return xls.excel.GetSheetList()
 }
 
-func (xls *Excel) Get(sheetName string, start, end *string) ([][]any, error) {
-	if sheetName >= "0" && sheetName <= "9" {
-		sheetName = xls.excel.GetSheetName(u.Int(sheetName))
-	}
+func (xls *Excel) SetColWidth(sheetName string, startCol string, endCol string, width float64) error {
+	sheetName = xls.GetSheetName(sheetName)
+	return xls.excel.SetColWidth(sheetName, startCol, endCol, width)
+}
 
+func (xls *Excel) SetColWidths(sheetName string, widths []float64) error {
+	sheetName = xls.GetSheetName(sheetName)
+	for i, w := range widths {
+		col := MakeColID(i)
+		if err := xls.excel.SetColWidth(sheetName, col, col, w); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (xls *Excel) MakeStyle(style excelize.Style) (int, error) {
+	fmt.Println(u.JsonP(style), 111)
+	return xls.excel.NewStyle(&style)
+}
+
+func (xls *Excel) SetCellStyle(sheetName string, start string, end string, styleID int) error {
+	sheetName = xls.GetSheetName(sheetName)
+	return xls.excel.SetCellStyle(sheetName, start, end, styleID)
+}
+
+func (xls *Excel) SetPanes(sheetName string, panes excelize.Panes) error {
+	sheetName = xls.GetSheetName(sheetName)
+	return xls.excel.SetPanes(sheetName, &panes)
+}
+
+func (xls *Excel) SetAutoFilter(sheetName string, start, end string, option *[]excelize.AutoFilterOptions) error {
+	sheetName = xls.GetSheetName(sheetName)
+	var opt []excelize.AutoFilterOptions
+	if option != nil {
+		opt = *option
+	}
+	return xls.excel.AutoFilter(sheetName, start+":"+end, opt)
+}
+
+func (xls *Excel) GetSheetName(sheetName string) string {
+	if sheetName == "" {
+		sheetName = "Sheet1"
+	}
+	if isIntMatcher.MatchString(sheetName) {
+		sheetName = xls.excel.GetSheetName(u.Int(sheetName))
+	} else {
+		if idx, err := xls.excel.GetSheetIndex(sheetName); err != nil || idx == -1 {
+			_, _ = xls.excel.NewSheet(sheetName)
+		}
+	}
+	return sheetName
+}
+
+func (xls *Excel) Get(sheetName string, start, end *string) ([][]any, error) {
+	sheetName = xls.GetSheetName(sheetName)
 	rows, err := xls.excel.GetRows(sheetName)
 	if err != nil {
 		return nil, err
@@ -261,6 +282,16 @@ func MakeCellID(col, row int) string {
 	return fmt.Sprint(colName, row+1)
 }
 
+func MakeColID(col int) string {
+	colName := ""
+	for col >= 0 {
+		i := col % 26
+		colName = string(rune(i+65)) + colName
+		col = col/26 - 1
+	}
+	return fmt.Sprint(colName)
+}
+
 func ParseCellID(cell string) (col, row int) {
 	row = 0
 	col = 0
diff --git a/office.go b/office.go
index ed3e68b..3691770 100644
--- a/office.go
+++ b/office.go
@@ -8,6 +8,7 @@ func init() {
 	obj := map[string]any{
 		"openExcel":   OpenExcel,
 		"makeCellID":  MakeCellID,
+		"makeColID":   MakeColID,
 		"parseCellID": ParseCellID,
 	}