diff --git a/README.md b/README.md
index ef404ea..6d37678 100644
--- a/README.md
+++ b/README.md
@@ -791,11 +791,25 @@ import "github.com/duke-git/lancet/v2/function"
     [[play](https://go.dev/play/p/hbON-Xeyn5N)]
 -   **<big>Pipeline</big>** : takes a list of functions and returns a function whose param will be passed into the functions one by one.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/function.md#Pipeline)]
-    [[play](https://go.dev/play/p/mPdUVvj6HD6)]
+-   **<big>AcceptIf</big>** : returns another function of the same signature as the apply function but also includes a bool value to indicate success or failure.
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/function.md#AcceptIf)]
+-   **<big>And</big>** : returns a composed predicate that represents the logical AND of a list of predicates.
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/function.md#And)]
+-   **<big>Or</big>** : returns a composed predicate that represents the logical OR of a list of predicates.
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/function.md#Or)]
+-   **<big>Negate</big>** : returns a predicate that represents the logical negation of this predicate.
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/function.md#Negate)]
+-   **<big>Nor</big>** : returns a composed predicate that represents the logical NOR of a list of predicates.
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/function.md#Nor)]
+-   **<big>Nand</big>** : returns a composed predicate that represents the logical Nand of a list of predicates.
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/function.md#Nand)]
+-   **<big>Xnor</big>** : returns a composed predicate that represents the logical XNOR of a list of predicates.
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/function.md#Xnor)]
 -   **<big>Watcher</big>** : Watcher is used for record code execution time. can start/stop/reset the watch timer. get the elapsed time of function execution.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/function.md#Watcher)]
     [[play](https://go.dev/play/p/l2yrOpCLd1I)]
 
+
 <h3 id="maputil"> 12. Maputil package includes some functions to manipulate map.&nbsp; &nbsp; &nbsp; &nbsp;<a href="#index">index</a></h3>
 
 ```go
diff --git a/README_zh-CN.md b/README_zh-CN.md
index d50d431..9caa9aa 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -790,6 +790,20 @@ import "github.com/duke-git/lancet/v2/function"
 -   **<big>Pipeline</big>** : 从右至左执行函数列表。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/function.md#Pipeline)]
     [[play](https://go.dev/play/p/mPdUVvj6HD6)]
+-   **<big>AcceptIf</big>** : AcceptIf函数会返回另一个函数，该函数的签名与apply函数相同，但同时还会包含一个布尔值来表示成功或失败。
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/function.md#AcceptIf)]
+-   **<big>And</big>** : 返回一个复合谓词判断函数，该判断函数表示一组谓词的逻辑and操作。
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/function.md#And)]
+-   **<big>Or</big>** : 返回一个复合谓词判断函数，该判断函数表示一组谓词的逻辑or操作。
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/function.md#Or)]
+-   **<big>Negate</big>** : 返回一个谓词函数，该谓词函数表示当前谓词的逻辑否定。
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/function.md#Negate)]
+-   **<big>Nor</big>** : 返回一个复合谓词判断函数，该判断函数表示一组谓词的逻辑非或nor的操作。
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/function.md#Nor)]
+-   **<big>Nand</big>** : 返回一个复合谓词判断函数，该判断函数表示一组谓词的逻辑非与nand的操作。
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/function.md#Nand)]
+-   **<big>Xnor</big>** : 返回一个复合谓词判断函数，该判断函数表示一组谓词的逻辑异或xnor的操作。
+    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/function.md#Xnor)]
 -   **<big>Watcher</big>** : Watcher 用于记录代码执行时间。可以启动/停止/重置手表定时器。获取函数执行的时间。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/function.md#Watcher)]
     [[play](https://go.dev/play/p/l2yrOpCLd1I)]
diff --git a/docs/api/packages/function.md b/docs/api/packages/function.md
index d338125..0d45096 100644
--- a/docs/api/packages/function.md
+++ b/docs/api/packages/function.md
@@ -644,7 +644,7 @@ func main() {
 
 ### <span id="AcceptIf">AcceptIf</span>
 
-<p>TBD</p>
+<p>AcceptIf函数会返回另一个函数，该函数的签名与 apply 函数相同，但同时还会包含一个布尔值来表示成功或失败。</p>
 
 <b>函数签名:</b>
 
@@ -664,31 +664,31 @@ import (
 
 func main() {
 
-	adder := AcceptIf(
-		And(
-			func(x int) bool {
-				return x > 10
-			}, func(x int) bool {
-				return x%2 == 0
-			}),
-		func(x int) int {
-			return x + 1
-		},
-	)
+    adder := AcceptIf(
+        And(
+            func(x int) bool {
+                return x > 10
+            }, func(x int) bool {
+                return x%2 == 0
+            }),
+        func(x int) int {
+            return x + 1
+        },
+    )
 
-	result, ok := adder(20)
-	fmt.Println(result)
-	fmt.Println(ok)
+    result, ok := adder(20)
+    fmt.Println(result)
+    fmt.Println(ok)
 
-	result, ok = adder(21)
-	fmt.Println(result)
-	fmt.Println(ok)
+    result, ok = adder(21)
+    fmt.Println(result)
+    fmt.Println(ok)
 
-	// Output:
-	// 21
-	// true
-	// 0
-	// false
+    // Output:
+    // 21
+    // true
+    // 0
+    // false
 }
 
 ```
\ No newline at end of file
diff --git a/docs/en/api/packages/function.md b/docs/en/api/packages/function.md
index 8e798ae..f4cf6d1 100644
--- a/docs/en/api/packages/function.md
+++ b/docs/en/api/packages/function.md
@@ -665,31 +665,31 @@ import (
 
 func main() {
 
-	adder := AcceptIf(
-		And(
-			func(x int) bool {
-				return x > 10
-			}, func(x int) bool {
-				return x%2 == 0
-			}),
-		func(x int) int {
-			return x + 1
-		},
-	)
+    adder := AcceptIf(
+        And(
+            func(x int) bool {
+                return x > 10
+            }, func(x int) bool {
+                return x%2 == 0
+            }),
+        func(x int) int {
+            return x + 1
+        },
+    )
 
-	result, ok := adder(20)
-	fmt.Println(result)
-	fmt.Println(ok)
+    result, ok := adder(20)
+    fmt.Println(result)
+    fmt.Println(ok)
 
-	result, ok = adder(21)
-	fmt.Println(result)
-	fmt.Println(ok)
+    result, ok = adder(21)
+    fmt.Println(result)
+    fmt.Println(ok)
 
-	// Output:
-	// 21
-	// true
-	// 0
-	// false
+    // Output:
+    // 21
+    // true
+    // 0
+    // false
 }
 
 ```
\ No newline at end of file