diff --git a/docs/mathutil.md b/docs/mathutil.md
index 8ee1489..d78ad49 100644
--- a/docs/mathutil.md
+++ b/docs/mathutil.md
@@ -40,6 +40,8 @@ import (
 -   [RadianToAngle](#RadianToAngle)
 -   [PointDistance](#PointDistance)
 -   [IsPrime](#IsPrime)
+-   [GCD](#GCD)
+-   [LCM](#LCM)
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -702,4 +704,83 @@ func main() {
 	// false
 	// true
 }
+```
+
+### <span id="GCD">GCD</span>
+
+<p>Return greatest common divisor (GCD) of integers.</p>
+
+<b>Signature:</b>
+
+```go
+func GCD[T constraints.Integer](integers ...T) T
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/v2/mathutil"
+)
+
+func main() {
+    result1 := mathutil.GCD(1, 1)
+	result2 := mathutil.GCD(1, -1)
+	result3 := mathutil.GCD(-1, 1)
+	result4 := mathutil.GCD(-1, -1)
+	result5 := mathutil.GCD(3, 6, 9)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+
+	// Output:
+	// 1
+	// 1
+	// -1
+	// -1
+	// 3
+}
+```
+
+
+### <span id="LCM">LCM</span>
+
+<p>Return Least Common Multiple (LCM) of integers.</p>
+
+<b>Signature:</b>
+
+```go
+func LCM[T constraints.Integer](integers ...T) T
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/v2/mathutil"
+)
+
+func main() {
+    result1 := mathutil.LCM(1, 1)
+	result2 := mathutil.LCM(1, 2)
+	result3 := mathutil.LCM(3, 6, 9)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+
+	// Output:
+	// 1
+	// 2
+	// 18
+}
 ```
\ No newline at end of file
diff --git a/docs/mathutil_zh-CN.md b/docs/mathutil_zh-CN.md
index dcb056b..f6a964d 100644
--- a/docs/mathutil_zh-CN.md
+++ b/docs/mathutil_zh-CN.md
@@ -40,6 +40,8 @@ import (
 -   [RadianToAngle](#RadianToAngle)
 -   [PointDistance](#PointDistance)
 -   [IsPrime](#IsPrime)
+-   [GCD](#GCD)
+-   [LCM](#LCM)
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -701,4 +703,84 @@ func main() {
 	// false
 	// false
 	// true
-}
\ No newline at end of file
+}
+```
+
+### <span id="GCD">GCD</span>
+
+<p>计算最大公约数。</p>
+
+<b>函数签名:</b>
+
+```go
+func GCD[T constraints.Integer](integers ...T) T
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/v2/mathutil"
+)
+
+func main() {
+    result1 := mathutil.GCD(1, 1)
+	result2 := mathutil.GCD(1, -1)
+	result3 := mathutil.GCD(-1, 1)
+	result4 := mathutil.GCD(-1, -1)
+	result5 := mathutil.GCD(3, 6, 9)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+
+	// Output:
+	// 1
+	// 1
+	// -1
+	// -1
+	// 3
+}
+```
+
+
+### <span id="LCM">LCM</span>
+
+<p>计算最小公倍数。</p>
+
+<b>函数签名:</b>
+
+```go
+func LCM[T constraints.Integer](integers ...T) T
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/v2/mathutil"
+)
+
+func main() {
+    result1 := mathutil.LCM(1, 1)
+	result2 := mathutil.LCM(1, 2)
+	result3 := mathutil.LCM(3, 6, 9)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+
+	// Output:
+	// 1
+	// 2
+	// 18
+}
+```
\ No newline at end of file
diff --git a/mathutil/mathutil.go b/mathutil/mathutil.go
index d76303b..31c5996 100644
--- a/mathutil/mathutil.go
+++ b/mathutil/mathutil.go
@@ -287,8 +287,8 @@ func gcd[T constraints.Integer](a, b T) T {
 func LCM[T constraints.Integer](integers ...T) T {
 	result := integers[0]
 
-	for i := 1; i < len(integers)-1; i++ {
-		result = lcm(result, integers[i])
+	for k := range integers {
+		result = lcm(integers[k], result)
 	}
 
 	return result
@@ -296,5 +296,8 @@ func LCM[T constraints.Integer](integers ...T) T {
 
 // find Least Common Multiple (LCM) via GCD.
 func lcm[T constraints.Integer](a, b T) T {
+	if a == 0 || b == 0 {
+		panic("lcm function: provide non zero integers only.")
+	}
 	return a * b / gcd(a, b)
 }
diff --git a/mathutil/mathutil_exmaple_test.go b/mathutil/mathutil_exmaple_test.go
index 56a3bae..da73da1 100644
--- a/mathutil/mathutil_exmaple_test.go
+++ b/mathutil/mathutil_exmaple_test.go
@@ -281,3 +281,39 @@ func ExampleIsPrime() {
 	// false
 	// true
 }
+
+func ExampleGCD() {
+	result1 := GCD(1, 1)
+	result2 := GCD(1, -1)
+	result3 := GCD(-1, 1)
+	result4 := GCD(-1, -1)
+	result5 := GCD(3, 6, 9)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+
+	// Output:
+	// 1
+	// 1
+	// -1
+	// -1
+	// 3
+}
+
+func ExampleLCM() {
+	result1 := LCM(1, 1)
+	result2 := LCM(1, 2)
+	result3 := LCM(3, 6, 9)
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+
+	// Output:
+	// 1
+	// 2
+	// 18
+}
diff --git a/mathutil/mathutil_test.go b/mathutil/mathutil_test.go
index 319015f..d82f8a4 100644
--- a/mathutil/mathutil_test.go
+++ b/mathutil/mathutil_test.go
@@ -239,12 +239,12 @@ func TestGCD(t *testing.T) {
 func TestLCM(t *testing.T) {
 	assert := internal.NewAssert(t, "TestLCM")
 
-	assert.Equal(0, LCM(0))
 	assert.Equal(1, LCM(1))
 	assert.Equal(-1, LCM(-1))
-	assert.Equal(0, LCM(0, -1))
-	assert.Equal(0, LCM(0, 1))
+	assert.Equal(-1, LCM(1, -1))
+	assert.Equal(1, LCM(-1, 1))
 	assert.Equal(1, LCM(1, 1))
-	assert.Equal(1, LCM(1, 2))
-	assert.Equal(6, LCM(3, 6, 9))
+	assert.Equal(-1, LCM(-1, -1))
+	assert.Equal(2, LCM(1, 2))
+	assert.Equal(18, LCM(3, 6, 9))
 }