diff --git a/int.go b/int.go
index bd65bea..bb4b32c 100644
--- a/int.go
+++ b/int.go
@@ -38,7 +38,7 @@ func (i Int) ToInt8() (int8, error) {
 // Date : 14:05 2023/5/5
 func (i Int) ToInt16() (int16, error) {
 	if math.MaxInt16 < int64(i) || math.MinInt16 > int64(i) {
-		return 0, fmt.Errorf("int16 value should between %v and %v ", math.MinInt8, math.MaxInt8)
+		return 0, fmt.Errorf("int16 value should between %v and %v ", math.MinInt16, math.MaxInt16)
 	}
 	return int16(i), nil
 }
@@ -50,7 +50,7 @@ func (i Int) ToInt16() (int16, error) {
 // Date : 14:05 2023/5/5
 func (i Int) ToInt32() (int32, error) {
 	if math.MaxInt32 < int64(i) || math.MinInt32 > int64(i) {
-		return 0, fmt.Errorf("int32 value should between %v and %v ", math.MinInt8, math.MaxInt8)
+		return 0, fmt.Errorf("int32 value should between %v and %v ", math.MinInt32, math.MaxInt32)
 	}
 	return int32(i), nil
 }
@@ -62,7 +62,7 @@ func (i Int) ToInt32() (int32, error) {
 // Date : 14:06 2023/5/5
 func (i Int) ToInt64() (int64, error) {
 	if math.MaxInt64 < i || math.MinInt64 > i {
-		return 0, fmt.Errorf("int64 value should between %v and %v ", math.MinInt8, math.MaxInt8)
+		return 0, fmt.Errorf("int64 value should between %v and %v ", math.MinInt64, math.MaxInt64)
 	}
 	return int64(i), nil
 }
@@ -74,7 +74,7 @@ func (i Int) ToInt64() (int64, error) {
 // Date : 14:07 2023/5/5
 func (i Int) ToInt() (int, error) {
 	if math.MaxInt < i || math.MinInt > i {
-		return 0, fmt.Errorf("int value should between %v and %v ", math.MinInt8, math.MaxInt8)
+		return 0, fmt.Errorf("int value should between %v and %v ", math.MinInt, math.MaxInt)
 	}
 	return int(i), nil
 }
diff --git a/uint.go b/uint.go
new file mode 100644
index 0000000..c48be8d
--- /dev/null
+++ b/uint.go
@@ -0,0 +1,89 @@
+// Package wrapper ...
+//
+// Description : wrapper ...
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 2023-05-05 14:20
+package wrapper
+
+import (
+	"fmt"
+	"math"
+)
+
+// Uint ...
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 14:20 2023/5/5
+type Uint uint64
+
+// ToUint8 ...
+//
+// 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", math.MaxUint8)
+	}
+	return uint8(ui), nil
+}
+
+// ToUint16 ...
+//
+// 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", math.MaxUint16)
+	}
+	return uint16(ui), nil
+}
+
+// ToUint32 ...
+//
+// 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", math.MaxUint32)
+	}
+	return uint32(ui), nil
+}
+
+// ToUint64 ...
+//
+// 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", math.MaxUint64)
+	}
+	return uint64(ui), nil
+}
+
+// ToUint ...
+//
+// 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", math.MaxUint)
+	}
+	return uint(ui), nil
+}
+
+// ToString ...
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 14:32 2023/5/5
+func (ui Uint) ToString() string {
+	return fmt.Sprintf("%v", ui)
+}