diff --git a/datetime/datetime.go b/datetime/datetime.go
index 2c00dbd..20c5e1c 100644
--- a/datetime/datetime.go
+++ b/datetime/datetime.go
@@ -205,3 +205,8 @@ func DayOfYear(t time.Time) int {
 
 	return int(nowDate.Sub(firstDay).Hours() / 24)
 }
+
+// IsWeekend checks if passed time is weekend or not.
+func IsWeekend(t time.Time) bool {
+	return time.Saturday == t.Weekday() || time.Sunday == t.Weekday()
+}
diff --git a/datetime/datetime_test.go b/datetime/datetime_test.go
index 85d5f18..ccfc486 100644
--- a/datetime/datetime_test.go
+++ b/datetime/datetime_test.go
@@ -283,3 +283,18 @@ func TestDayOfYear(t *testing.T) {
 	result3 := DayOfYear(date3)
 	assert.Equal(0, result3)
 }
+
+func TestIsWeekend(t *testing.T) {
+	assert := internal.NewAssert(t, "TestIsWeekend")
+	date := time.Date(2023, 06, 03, 0, 0, 0, 0, time.Local)
+	result := IsWeekend(date)
+	assert.Equal(true, result)
+
+	date1 := time.Date(2023, 06, 04, 0, 0, 0, 0, time.Local)
+	result1 := IsWeekend(date1)
+	assert.Equal(true, result1)
+
+	date2 := time.Date(2023, 06, 02, 0, 0, 0, 0, time.Local)
+	result2 := IsWeekend(date2)
+	assert.Equal(false, result2)
+}
diff --git a/docs/datetime.md b/docs/datetime.md
index a54b85f..30deea6 100644
--- a/docs/datetime.md
+++ b/docs/datetime.md
@@ -56,6 +56,7 @@ import (
 -   [IsLeapYear](#IsLeapYear)
 -   [BetweenSeconds](#BetweenSeconds)
 -   [DayOfYear](#DayOfYear)
+-   [IsWeekend](#IsWeekend)
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -1076,3 +1077,83 @@ func main() {
     // 0
 }
 ```
+
+### <span id="IsWeekend">IsWeekend</span>
+
+<p>Checks if passed time is weekend or not.</p>
+
+<b>Signature:</b>
+
+```go
+func IsWeekend(t time.Time) bool
+```
+
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/datetime"
+)
+
+func main() {
+    date1 := time.Date(2023, 06, 03, 0, 0, 0, 0, time.Local)
+    date2 := time.Date(2023, 06, 04, 0, 0, 0, 0, time.Local)
+    date3 := time.Date(2023, 06, 02, 0, 0, 0, 0, time.Local)
+
+    result1 := datetime.IsWeekend(date1)
+    result2 := datetime.IsWeekend(date2)
+    result3 := datetime.IsWeekend(date3)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // true
+    // true
+    // false
+}
+```
+
+### <span id="IsWeekend">IsWeekend</span>
+
+<p>判断日期是否是周末。</p>
+
+<b>函数签名:</b>
+
+```go
+func IsWeekend(t time.Time) bool
+```
+
+<b>示例:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/datetime"
+)
+
+func main() {
+    date1 := time.Date(2023, 06, 03, 0, 0, 0, 0, time.Local)
+    date2 := time.Date(2023, 06, 04, 0, 0, 0, 0, time.Local)
+    date3 := time.Date(2023, 06, 02, 0, 0, 0, 0, time.Local)
+
+    result1 := datetime.IsWeekend(date1)
+    result2 := datetime.IsWeekend(date2)
+    result3 := datetime.IsWeekend(date3)
+
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+
+    // Output:
+    // true
+    // true
+    // false
+}
+```
diff --git a/docs/datetime_zh-CN.md b/docs/datetime_zh-CN.md
index 53f786e..b0636a2 100644
--- a/docs/datetime_zh-CN.md
+++ b/docs/datetime_zh-CN.md
@@ -56,6 +56,8 @@ import (
 -   [IsLeapYear](#IsLeapYear)
 -   [BetweenSeconds](#BetweenSeconds)
 -   [DayOfYear](#DayOfYear)
+-   [IsWeekend](#IsWeekend)
+
 
 <div STYLE="page-break-after: always;"></div>