diff --git a/uint.go b/uint.go
index 0aace1f..69e574c 100644
--- a/uint.go
+++ b/uint.go
@@ -24,11 +24,17 @@ type Uint uint64
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 14:21 2023/5/5
-func (ui Uint) ToUint8() (uint8, error) {
-	if ui > math.MaxUint8 || ui < 0 {
-		return 0, fmt.Errorf("uint8 should between 0 and %v", uint8(math.MaxUint8))
+func (ui Uint) ToUint8() Uint8Result {
+	res := Uint8Result{
+		Value: 0,
+		Err:   nil,
 	}
-	return uint8(ui), nil
+	if ui > math.MaxUint8 || ui < 0 {
+		res.Err = fmt.Errorf("uint8 should between 0 and %v", uint8(math.MaxUint8))
+		return res
+	}
+	res.Value = uint8(ui)
+	return res
 }
 
 // ToUint16 ...
@@ -36,11 +42,17 @@ func (ui Uint) ToUint8() (uint8, error) {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 14:25 2023/5/5
-func (ui Uint) ToUint16() (uint16, error) {
-	if ui > math.MaxUint16 || ui < 0 {
-		return 0, fmt.Errorf("uint16 should between 0 and %v", uint16(math.MaxUint16))
+func (ui Uint) ToUint16() Uint16Result {
+	res := Uint16Result{
+		Value: 0,
+		Err:   nil,
 	}
-	return uint16(ui), nil
+	if ui > math.MaxUint16 || ui < 0 {
+		res.Err = fmt.Errorf("uint16 should between 0 and %v", uint16(math.MaxUint16))
+		return res
+	}
+	res.Value = uint16(ui)
+	return res
 }
 
 // ToUint32 ...
@@ -48,11 +60,17 @@ func (ui Uint) ToUint16() (uint16, error) {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 14:25 2023/5/5
-func (ui Uint) ToUint32() (uint32, error) {
-	if ui > math.MaxUint32 || ui < 0 {
-		return 0, fmt.Errorf("uint32 should between 0 and %v", uint32(math.MaxUint32))
+func (ui Uint) ToUint32() Uint32Result {
+	res := Uint32Result{
+		Value: 0,
+		Err:   nil,
 	}
-	return uint32(ui), nil
+	if ui > math.MaxUint32 || ui < 0 {
+		res.Err = fmt.Errorf("uint32 should between 0 and %v", uint32(math.MaxUint32))
+		return res
+	}
+	res.Value = uint32(ui)
+	return res
 }
 
 // ToUint64 ...
@@ -60,11 +78,16 @@ func (ui Uint) ToUint32() (uint32, error) {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 14:30 2023/5/5
-func (ui Uint) ToUint64() (uint64, error) {
-	if ui > math.MaxUint64 || ui < 0 {
-		return 0, fmt.Errorf("uint64 should between 0 and %v", uint64(math.MaxUint64))
+func (ui Uint) ToUint64() Uint64Result {
+	res := Uint64Result{
+		Value: 0,
+		Err:   nil,
 	}
-	return uint64(ui), nil
+	if ui > math.MaxUint64 || ui < 0 {
+		res.Err = fmt.Errorf("uint64 should between 0 and %v", uint64(math.MaxUint64))
+	}
+	res.Value = uint64(ui)
+	return res
 }
 
 // ToUint ...
@@ -72,11 +95,17 @@ func (ui Uint) ToUint64() (uint64, error) {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 14:31 2023/5/5
-func (ui Uint) ToUint() (uint, error) {
-	if ui > math.MaxUint || ui < 0 {
-		return 0, fmt.Errorf("uint should between 0 and %v", uint(math.MaxUint))
+func (ui Uint) ToUint() UintResult {
+	res := UintResult{
+		Value: 0,
+		Err:   nil,
 	}
-	return uint(ui), nil
+	if ui > math.MaxUint || ui < 0 {
+		res.Err = fmt.Errorf("uint should between 0 and %v", uint(math.MaxUint))
+		return res
+	}
+	res.Value = uint(ui)
+	return res
 }
 
 // ToString ...
@@ -84,10 +113,16 @@ func (ui Uint) ToUint() (uint, error) {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 14:32 2023/5/5
-func (ui Uint) ToString() (string, error) {
-	uint64Val, err := ui.ToUint64()
-	if nil != err {
-		return "", err
+func (ui Uint) ToString() StringResult {
+	uint64Val := ui.ToUint64()
+	if nil != uint64Val.Err {
+		return StringResult{
+			Value: "",
+			Err:   uint64Val.Err,
+		}
+	}
+	return StringResult{
+		Value: fmt.Sprintf("%v", uint64Val),
+		Err:   nil,
 	}
-	return fmt.Sprintf("%v", uint64Val), nil
 }