diff --git a/validation/util.go b/validation/util.go
index 9e7460a6..c8db0442 100644
--- a/validation/util.go
+++ b/validation/util.go
@@ -249,6 +249,26 @@ func parseParam(t reflect.Type, s string) (i interface{}, err error) {
 	switch t.Kind() {
 	case reflect.Int:
 		i, err = strconv.Atoi(s)
+	case reflect.Int64:
+		i, err = strconv.ParseInt(s, 10, 64)
+	case reflect.Int32:
+		var v int64
+		v, err = strconv.ParseInt(s, 10, 32)
+		if err == nil {
+			i = int32(v)
+		}
+	case reflect.Int16:
+		var v int64
+		v, err = strconv.ParseInt(s, 10, 16)
+		if err == nil {
+			i = int16(v)
+		}
+	case reflect.Int8:
+		var v int64
+		v, err = strconv.ParseInt(s, 10, 8)
+		if err == nil {
+			i = int8(v)
+		}
 	case reflect.String:
 		i = s
 	case reflect.Ptr:
diff --git a/validation/validation.go b/validation/validation.go
index 9dc51106..9d05befc 100644
--- a/validation/validation.go
+++ b/validation/validation.go
@@ -144,17 +144,17 @@ func (v *Validation) Required(obj interface{}, key string) *Result {
 }
 
 // Min Test that the obj is greater than min if obj's type is int
-func (v *Validation) Min(obj interface{}, min int, key string) *Result {
+func (v *Validation) Min(obj interface{}, min int64, key string) *Result {
 	return v.apply(Min{min, key}, obj)
 }
 
 // Max Test that the obj is less than max if obj's type is int
-func (v *Validation) Max(obj interface{}, max int, key string) *Result {
+func (v *Validation) Max(obj interface{}, max int64, key string) *Result {
 	return v.apply(Max{max, key}, obj)
 }
 
 // Range Test that the obj is between mni and max if obj's type is int
-func (v *Validation) Range(obj interface{}, min, max int, key string) *Result {
+func (v *Validation) Range(obj interface{}, min, max int64, key string) *Result {
 	return v.apply(Range{Min{Min: min}, Max{Max: max}, key}, obj)
 }
 
diff --git a/validation/validation_test.go b/validation/validation_test.go
index 71a8bd17..7a88acad 100644
--- a/validation/validation_test.go
+++ b/validation/validation_test.go
@@ -64,10 +64,10 @@ func TestRequired(t *testing.T) {
 func TestMin(t *testing.T) {
 	valid := Validation{}
 
-	if valid.Min(-1, 0, "min0").Ok {
+	if valid.Min(int64(-1), int64(0), "min0").Ok {
 		t.Error("-1 is less than the minimum value of 0 should be false")
 	}
-	if !valid.Min(1, 0, "min0").Ok {
+	if !valid.Min(int64(1), int64(0), "min0").Ok {
 		t.Error("1 is greater or equal than the minimum value of 0 should be true")
 	}
 }
@@ -75,10 +75,10 @@ func TestMin(t *testing.T) {
 func TestMax(t *testing.T) {
 	valid := Validation{}
 
-	if valid.Max(1, 0, "max0").Ok {
+	if valid.Max(int64(1), int64(0), "max0").Ok {
 		t.Error("1 is greater than the minimum value of 0 should be false")
 	}
-	if !valid.Max(-1, 0, "max0").Ok {
+	if !valid.Max(int64(-1), int64(0), "max0").Ok {
 		t.Error("-1 is less or equal than the maximum value of 0 should be true")
 	}
 }
diff --git a/validation/validators.go b/validation/validators.go
index 5d489a55..264e61a1 100644
--- a/validation/validators.go
+++ b/validation/validators.go
@@ -161,17 +161,29 @@ func (r Required) GetLimitValue() interface{} {
 
 // Min check struct
 type Min struct {
-	Min int
+	Min int64
 	Key string
 }
 
 // IsSatisfied judge whether obj is valid
 func (m Min) IsSatisfied(obj interface{}) bool {
-	num, ok := obj.(int)
-	if ok {
-		return num >= m.Min
+	var v int64
+	switch obj.(type) {
+	case int64:
+		v = obj.(int64)
+	case int:
+		v = int64(obj.(int))
+	case int32:
+		v = int64(obj.(int32))
+	case int16:
+		v = int64(obj.(int16))
+	case int8:
+		v = int64(obj.(int8))
+	default:
+		return false
 	}
-	return false
+
+	return v >= m.Min
 }
 
 // DefaultMessage return the default min error message
@@ -191,17 +203,29 @@ func (m Min) GetLimitValue() interface{} {
 
 // Max validate struct
 type Max struct {
-	Max int
+	Max int64
 	Key string
 }
 
 // IsSatisfied judge whether obj is valid
 func (m Max) IsSatisfied(obj interface{}) bool {
-	num, ok := obj.(int)
-	if ok {
-		return num <= m.Max
+	var v int64
+	switch obj.(type) {
+	case int64:
+		v = obj.(int64)
+	case int:
+		v = int64(obj.(int))
+	case int32:
+		v = int64(obj.(int32))
+	case int16:
+		v = int64(obj.(int16))
+	case int8:
+		v = int64(obj.(int8))
+	default:
+		return false
 	}
-	return false
+
+	return v <= m.Max
 }
 
 // DefaultMessage return the default max error message
@@ -243,7 +267,7 @@ func (r Range) GetKey() string {
 
 // GetLimitValue return the limit value, Max
 func (r Range) GetLimitValue() interface{} {
-	return []int{r.Min.Min, r.Max.Max}
+	return []int64{r.Min.Min, r.Max.Max}
 }
 
 // MinSize Requires an array or string to be at least a given length.