diff --git a/README.md b/README.md
index 605b8ed..45b1bec 100644
--- a/README.md
+++ b/README.md
@@ -1543,6 +1543,8 @@ import "github.com/duke-git/lancet/v2/strutil"
 -   **<big>IsBlank</big>** : checks if a string is whitespace or empty.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/strutil.md#IsBlank)]
     [[play](https://go.dev/play/p/6zXRH_c0Qd3)]
+-   **<big>IsNotBlank</big>** : checks if a string is not whitespace or not empty.
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/strutil.md#IsNotBlank)]
 -   **<big>HasPrefixAny</big>** : checks if a string starts with any of an array of specified strings.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/strutil.md#HasPrefixAny)]
     [[play](https://go.dev/play/p/8UUTl2C5slo)]
diff --git a/docs/api/packages/strutil.md b/docs/api/packages/strutil.md
index 6c71ef2..11a9c0e 100644
--- a/docs/api/packages/strutil.md
+++ b/docs/api/packages/strutil.md
@@ -49,6 +49,7 @@ import (
 -   [StringToBytes](#StringToBytes)
 -   [BytesToString](#BytesToString)
 -   [IsBlank](#IsBlank)
+-   [IsNotBlank](#IsNotBlank)
 -   [HasPrefixAny](#HasPrefixAny)
 -   [HasSuffixAny](#HasSuffixAny)
 -   [IndexOffset](#IndexOffset)
@@ -1075,6 +1076,45 @@ func main() {
 }
 ```
 
+### <span id="IsNotBlank">IsNotBlank</span>
+
+<p>Checks if a string is not whitespace or not empty.</p>
+
+<b>Signature:</b>
+
+```go
+func IsNotBlank(str string) bool
+```
+
+<b>Example:</b>
+
+```go
+import (
+    "fmt"
+    "github.com/duke-git/lancet/v2/strutil"
+)
+
+func main() {
+    result1 := IsNotBlank("")
+    result2 := IsNotBlank("	")
+    result3 := IsNotBlank("\t\v\f\n")
+    result4 := IsNotBlank(" 中文")
+    result5 := IsNotBlank(" 	world	")
+    
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    // Output:
+    // false
+    // false
+    // false
+    // true
+    // true
+}
+```
+
 ### <span id="HasPrefixAny">HasPrefixAny</span>
 
 <p>检查字符串是否以指定字符串数组中的任何一个开头。</p>
diff --git a/docs/en/api/packages/strutil.md b/docs/en/api/packages/strutil.md
index 1e890de..fe416a6 100644
--- a/docs/en/api/packages/strutil.md
+++ b/docs/en/api/packages/strutil.md
@@ -49,6 +49,7 @@ import (
 -   [StringToBytes](#StringToBytes)
 -   [BytesToString](#BytesToString)
 -   [IsBlank](#IsBlank)
+-   [IsNotBlank](#IsNotBlank)
 -   [HasPrefixAny](#HasPrefixAny)
 -   [HasSuffixAny](#HasSuffixAny)
 -   [IndexOffset](#IndexOffset)
@@ -1076,6 +1077,45 @@ func main() {
 }
 ```
 
+### <span id="IsNotBlank">IsNotBlank</span>
+
+<p>Checks if a string is not whitespace or not empty.</p>
+
+<b>Signature:</b>
+
+```go
+func IsNotBlank(str string) bool
+```
+
+<b>Example:</b>
+
+```go
+import (
+    "fmt"
+    "github.com/duke-git/lancet/v2/strutil"
+)
+
+func main() {
+    result1 := IsNotBlank("")
+    result2 := IsNotBlank("	")
+    result3 := IsNotBlank("\t\v\f\n")
+    result4 := IsNotBlank(" 中文")
+    result5 := IsNotBlank(" 	world	")
+    
+    fmt.Println(result1)
+    fmt.Println(result2)
+    fmt.Println(result3)
+    fmt.Println(result4)
+    fmt.Println(result5)
+    // Output:
+    // false
+    // false
+    // false
+    // true
+    // true
+}
+```
+
 ### <span id="HasPrefixAny">HasPrefixAny</span>
 
 <p>Checks if a string starts with any of an array of specified strings.</p>
diff --git a/strutil/string.go b/strutil/string.go
index 169fc1d..17dbe07 100644
--- a/strutil/string.go
+++ b/strutil/string.go
@@ -408,6 +408,11 @@ func IsBlank(str string) bool {
 	return true
 }
 
+// IsNotBlank checks if a string is not whitespace, not empty.
+func IsNotBlank(str string) bool {
+	return !IsBlank(str)
+}
+
 // HasPrefixAny check if a string starts with any of a slice of specified strings.
 // Play: https://go.dev/play/p/8UUTl2C5slo
 func HasPrefixAny(str string, prefixes []string) bool {
diff --git a/strutil/string_example_test.go b/strutil/string_example_test.go
index 310fac7..586ab97 100644
--- a/strutil/string_example_test.go
+++ b/strutil/string_example_test.go
@@ -479,6 +479,26 @@ func ExampleIsBlank() {
 	// false
 }
 
+func ExampleIsNotBlank() {
+	result1 := IsNotBlank("")
+	result2 := IsNotBlank("			")
+	result3 := IsNotBlank("\t\v\f\n")
+	result4 := IsNotBlank(" 中文")
+	result5 := IsNotBlank(" 	world	")
+
+	fmt.Println(result1)
+	fmt.Println(result2)
+	fmt.Println(result3)
+	fmt.Println(result4)
+	fmt.Println(result5)
+	// Output:
+	// false
+	// false
+	// false
+	// true
+	// true
+}
+
 func ExampleHasPrefixAny() {
 	result1 := HasPrefixAny("foo bar", []string{"fo", "xyz", "hello"})
 	result2 := HasPrefixAny("foo bar", []string{"oom", "world"})
diff --git a/strutil/string_test.go b/strutil/string_test.go
index 2586ec7..1947e27 100644
--- a/strutil/string_test.go
+++ b/strutil/string_test.go
@@ -427,6 +427,18 @@ func TestIsBlank(t *testing.T) {
 	assert.Equal(IsBlank(" 中文"), false)
 }
 
+func TestIsNotBlank(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestIsBlank")
+	assert.Equal(IsNotBlank(""), false)
+	assert.Equal(IsNotBlank("			"), false)
+	assert.Equal(IsNotBlank("\t\v\f\n"), false)
+
+	assert.Equal(IsNotBlank(" 中文"), true)
+	assert.Equal(IsNotBlank(" 	world	"), true)
+}
+
 func TestHasPrefixAny(t *testing.T) {
 	t.Parallel()