diff --git a/.gitignore b/.gitignore
index 8db0c1f..5dbdb74 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,4 +32,8 @@ coverage.html
 example/CI/media_process/test*
 example/CI/workflow_and_job/test*
 example/CI/metainsight/test*
+example/CI/ai_recognition/test*
+example/CI/image_process/test*
+example/CI/doc_preview/test*
+example/CI/content_auditing/test*
 .vscode
diff --git a/ci.go b/ci.go
index bf603f0..d7084ed 100644
--- a/ci.go
+++ b/ci.go
@@ -2581,3 +2581,46 @@ func (s *CIService) AIGameRec(ctx context.Context, obj string, opt *AIGameRecOpt
 	resp, err := s.client.send(ctx, sendOpt)
 	return &res, resp, err
 }
+
+type AIPicMattingOptions struct {
+	DetectUrl     string      `url:"detect-url, omitempty" json:"-"`     // 您可以通过填写 detect-url 处理任意公网可访问的图片链接。不填写 detect-url 时，后台会默认处理 ObjectKey ，填写了 detect-url 时，后台会处理 detect-url 链接，无需再填写 ObjectKey detect-url 示例：http://www.example.com/abc.jpg ，需要进行 UrlEncode，处理后为http%25253A%25252F%25252Fwww.example.com%25252Fabc.jpg。
+	CenterLayout  int         `url:"center-layout, omitempty" json:"-"`  // 抠图主体居中显示；值为1时居中显示，值为0不做处理，默认为0
+	PaddingLayout string      `url:"padding-layout, omitempty" json:"-"` // 将处理后的图片四边进行留白，形式为 padding-layout=<dx>x<dy>，左右两边各进行 dx 像素的留白，上下两边各进行 dy 像素的留白，例如：padding-layout=20x10默认不进行留白操作，dx、dy 最大值为1000像素。
+	OptHeaders    *OptHeaders `header:"-, omitempty" url:"-" json:"-" xml:"-"`
+}
+
+// 通用抠图
+// https://cloud.tencent.com/document/product/460/106750
+func (s *CIService) AIPicMatting(ctx context.Context, ObjectKey string, opt *AIPicMattingOptions) (*Response, error) {
+	sendOpt := sendOptions{
+		baseURL:          s.client.BaseURL.BucketURL,
+		uri:              "/" + encodeURIComponent(ObjectKey) + "?ci-process=AIPicMatting",
+		method:           http.MethodGet,
+		optQuery:         opt,
+		disableCloseBody: true,
+	}
+	resp, err := s.client.send(ctx, &sendOpt)
+	return resp, err
+}
+
+type AIPortraitMattingOptions struct {
+	DetectUrl     string      `url:"detect-url, omitempty" json:"-"`     // 您可以通过填写 detect-url 处理任意公网可访问的图片链接。不填写 detect-url 时，后台会默认处理 ObjectKey ，填写了 detect-url 时，后台会处理 detect-url 链接，无需再填写 ObjectKey。 detect-url 示例：http://www.example.com/abc.jpg，需要进行 UrlEncode，处理后为http%25253A%25252F%25252Fwww.example.com%25252Fabc.jpg。
+	CenterLayout  int         `url:"center-layout, omitempty" json:"-"`  // 抠图主体居中显示；值为1时居中显示，值为0不做处理，默认为0
+	PaddingLayout string      `url:"padding-layout, omitempty" json:"-"` // 将处理后的图片四边进行留白，形式为 padding-layout=x，左右两边各进行 dx 像素的留白，上下两边各进行 dy 像素的留白，例如：padding-layout=20x10默认不进行留白操作，dx、dy最大值为1000像素。
+	OptHeaders    *OptHeaders `header:"-, omitempty" url:"-" json:"-" xml:"-"`
+}
+
+// 人像抠图
+// https://cloud.tencent.com/document/product/460/106751
+func (s *CIService) AIPortraitMatting(ctx context.Context, ObjectKey string, opt *AIPortraitMattingOptions) (*Response, error) {
+
+	sendOpt := sendOptions{
+		baseURL:          s.client.BaseURL.BucketURL,
+		uri:              "/" + encodeURIComponent(ObjectKey) + "?ci-process=AIPortraitMatting",
+		method:           http.MethodGet,
+		optQuery:         opt,
+		disableCloseBody: true,
+	}
+	resp, err := s.client.send(ctx, &sendOpt)
+	return resp, err
+}
diff --git a/ci_test.go b/ci_test.go
index 984bd4e..76eed96 100644
--- a/ci_test.go
+++ b/ci_test.go
@@ -2958,3 +2958,39 @@ func TestCIService_AIGameRec(t *testing.T) {
 		t.Fatalf("CI.AIGameRec returned error: %v", err)
 	}
 }
+
+func TestCIService_AIPicMatting(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/test.jpg", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, http.MethodGet)
+		v := values{
+			"ci-process": "AIPicMatting",
+		}
+		testFormValues(t, r, v)
+	})
+
+	_, err := client.CI.AIPicMatting(context.Background(), "test.jpg", nil)
+	if err != nil {
+		t.Fatalf("CI.AIPicMatting returned error: %v", err)
+	}
+}
+
+func TestCIService_AIPortraitMatting(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/test.jpg", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, http.MethodGet)
+		v := values{
+			"ci-process": "AIPortraitMatting",
+		}
+		testFormValues(t, r, v)
+	})
+
+	_, err := client.CI.AIPortraitMatting(context.Background(), "test.jpg", nil)
+	if err != nil {
+		t.Fatalf("CI.AIPortraitMatting returned error: %v", err)
+	}
+}
diff --git a/example/CI/ai_recognition/aipic_matting.go b/example/CI/ai_recognition/aipic_matting.go
new file mode 100644
index 0000000..57f2de9
--- /dev/null
+++ b/example/CI/ai_recognition/aipic_matting.go
@@ -0,0 +1,146 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+
+	"github.com/tencentyun/cos-go-sdk-v5"
+	"github.com/tencentyun/cos-go-sdk-v5/debug"
+)
+
+func log_status(err error) {
+	if err == nil {
+		return
+	}
+	if cos.IsNotFoundError(err) {
+		// WARN
+		fmt.Println("WARN: Resource is not existed")
+	} else if e, ok := cos.IsCOSError(err); ok {
+		fmt.Printf("ERROR: Code: %v\n", e.Code)
+		fmt.Printf("ERROR: Message: %v\n", e.Message)
+		fmt.Printf("ERROR: Resource: %v\n", e.Resource)
+		fmt.Printf("ERROR: RequestId: %v\n", e.RequestID)
+		// ERROR
+	} else {
+		fmt.Printf("ERROR: %v\n", err)
+		// ERROR
+	}
+}
+
+// 通用抠图(上传时)
+func aipicMattingWhenUpload() {
+	u, _ := url.Parse("https://test-1253960454.cos.ap-chongqing.myqcloud.com")
+	b := &cos.BaseURL{BucketURL: u}
+	c := cos.NewClient(b, &http.Client{
+		Transport: &cos.AuthorizationTransport{
+			SecretID:  os.Getenv("COS_SECRETID"),
+			SecretKey: os.Getenv("COS_SECRETKEY"),
+			Transport: &debug.DebugRequestTransport{
+				RequestHeader:  true,
+				RequestBody:    false,
+				ResponseHeader: true,
+				ResponseBody:   false,
+			},
+		},
+	})
+
+	opt := &cos.ObjectPutOptions{
+		ACLHeaderOptions: nil,
+		ObjectPutHeaderOptions: &cos.ObjectPutHeaderOptions{
+			XOptionHeader: &http.Header{},
+		},
+	}
+	pic := &cos.PicOperations{
+		IsPicInfo: 1,
+		Rules: []cos.PicOperationsRules{
+			{
+				FileId: "pic/out.jpeg",
+				Rule:   "ci-process=AIPicMatting&center-layout=1&padding-layout=500x500",
+			},
+		},
+	}
+	opt.XOptionHeader.Add("Pic-Operations", cos.EncodePicOperations(pic))
+	name := "pic/test/cup.jpeg"
+	local_filename := "./cup.jpeg"
+	res, _, err := c.CI.PutFromFile(context.Background(), name, local_filename, opt)
+	log_status(err)
+	fmt.Printf("%+v\n", res)
+	fmt.Printf("%+v\n", res.OriginalInfo)
+	fmt.Printf("%+v\n", res.ProcessResults)
+}
+
+// 通用抠图(下载时)
+func aipicMattingWhenDownload() {
+	u, _ := url.Parse("https://test-1253960454.pic.ap-chongqing.myqcloud.com")
+	// u, _ := url.Parse("https://test-1253960454.cos.ap-chongqing.myqcloud.com")
+	b := &cos.BaseURL{BucketURL: u}
+	c := cos.NewClient(b, &http.Client{
+		Transport: &cos.AuthorizationTransport{
+			SecretID:  os.Getenv("COS_SECRETID"),
+			SecretKey: os.Getenv("COS_SECRETKEY"),
+			Transport: &debug.DebugRequestTransport{
+				RequestHeader: true,
+				// Notice when put a large file and set need the request body, might happend out of memory error.
+				RequestBody:    false,
+				ResponseHeader: true,
+				ResponseBody:   false,
+			},
+		},
+	})
+
+	key := "pic/cup.jpeg"
+	localPath := "cup.jpeg"
+	opt := &cos.AIPicMattingOptions{
+		CenterLayout:  1,
+		PaddingLayout: "500x500",
+	}
+	resp, err := c.CI.AIPicMatting(context.Background(), key, opt)
+	log_status(err)
+	fd, _ := os.OpenFile(localPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
+	io.Copy(fd, resp.Body)
+	fd.Close()
+}
+
+// 通用抠图(云上数据处理)
+func aipicMattingWhenCloud() {
+	u, _ := url.Parse("https://test-1253960454.cos.ap-chongqing.myqcloud.com")
+	b := &cos.BaseURL{BucketURL: u}
+	c := cos.NewClient(b, &http.Client{
+		Transport: &cos.AuthorizationTransport{
+			SecretID:  os.Getenv("COS_SECRETID"),
+			SecretKey: os.Getenv("COS_SECRETKEY"),
+			Transport: &debug.DebugRequestTransport{
+				RequestHeader: true,
+				// Notice when put a large file and set need the request body, might happend out of memory error.
+				RequestBody:    false,
+				ResponseHeader: true,
+				ResponseBody:   false,
+			},
+		},
+	})
+
+	pic := &cos.PicOperations{
+		IsPicInfo: 1,
+		Rules: []cos.PicOperationsRules{
+			{
+				FileId: "pic/cup_out.jpeg",
+				Rule:   "ci-process=AIPicMatting&center-layout=1&padding-layout=500x500",
+			},
+		},
+	}
+
+	key := "pic/cup.jpeg"
+	res, _, err := c.CI.ImageProcess(context.Background(), key, pic)
+	log_status(err)
+	fmt.Printf("%+v\n", res)
+}
+
+func main() {
+	aipicMattingWhenDownload()
+	// aipicMattingWhenUpload()
+	// aipicMattingWhenCloud()
+}
diff --git a/example/CI/ai_recognition/aiportrait_matting.go b/example/CI/ai_recognition/aiportrait_matting.go
new file mode 100644
index 0000000..8f91ef5
--- /dev/null
+++ b/example/CI/ai_recognition/aiportrait_matting.go
@@ -0,0 +1,146 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+
+	"github.com/tencentyun/cos-go-sdk-v5"
+	"github.com/tencentyun/cos-go-sdk-v5/debug"
+)
+
+func log_status(err error) {
+	if err == nil {
+		return
+	}
+	if cos.IsNotFoundError(err) {
+		// WARN
+		fmt.Println("WARN: Resource is not existed")
+	} else if e, ok := cos.IsCOSError(err); ok {
+		fmt.Printf("ERROR: Code: %v\n", e.Code)
+		fmt.Printf("ERROR: Message: %v\n", e.Message)
+		fmt.Printf("ERROR: Resource: %v\n", e.Resource)
+		fmt.Printf("ERROR: RequestId: %v\n", e.RequestID)
+		// ERROR
+	} else {
+		fmt.Printf("ERROR: %v\n", err)
+		// ERROR
+	}
+}
+
+// 人像抠图(上传时)
+func aiportraitMattingWhenUpload() {
+	u, _ := url.Parse("https://test-1253960454.cos.ap-chongqing.myqcloud.com")
+	b := &cos.BaseURL{BucketURL: u}
+	c := cos.NewClient(b, &http.Client{
+		Transport: &cos.AuthorizationTransport{
+			SecretID:  os.Getenv("COS_SECRETID"),
+			SecretKey: os.Getenv("COS_SECRETKEY"),
+			Transport: &debug.DebugRequestTransport{
+				RequestHeader:  true,
+				RequestBody:    false,
+				ResponseHeader: true,
+				ResponseBody:   false,
+			},
+		},
+	})
+
+	opt := &cos.ObjectPutOptions{
+		ACLHeaderOptions: nil,
+		ObjectPutHeaderOptions: &cos.ObjectPutHeaderOptions{
+			XOptionHeader: &http.Header{},
+		},
+	}
+	pic := &cos.PicOperations{
+		IsPicInfo: 1,
+		Rules: []cos.PicOperationsRules{
+			{
+				FileId: "pic/out.jpeg",
+				Rule:   "ci-process=AIPortraitMatting&center-layout=1&padding-layout=500x500",
+			},
+		},
+	}
+	opt.XOptionHeader.Add("Pic-Operations", cos.EncodePicOperations(pic))
+	name := "pic/test/cup.jpeg"
+	local_filename := "./cup.jpeg"
+	res, _, err := c.CI.PutFromFile(context.Background(), name, local_filename, opt)
+	log_status(err)
+	fmt.Printf("%+v\n", res)
+	fmt.Printf("%+v\n", res.OriginalInfo)
+	fmt.Printf("%+v\n", res.ProcessResults)
+}
+
+// 人像抠图(下载时)
+func aiportraitMattingWhenDownload() {
+	u, _ := url.Parse("https://test-1253960454.pic.ap-chongqing.myqcloud.com")
+	// u, _ := url.Parse("https://test-1253960454.cos.ap-chongqing.myqcloud.com")
+	b := &cos.BaseURL{BucketURL: u}
+	c := cos.NewClient(b, &http.Client{
+		Transport: &cos.AuthorizationTransport{
+			SecretID:  os.Getenv("COS_SECRETID"),
+			SecretKey: os.Getenv("COS_SECRETKEY"),
+			Transport: &debug.DebugRequestTransport{
+				RequestHeader: true,
+				// Notice when put a large file and set need the request body, might happend out of memory error.
+				RequestBody:    false,
+				ResponseHeader: true,
+				ResponseBody:   false,
+			},
+		},
+	})
+
+	key := "pic/cup.jpeg"
+	localPath := "cup.jpeg"
+	opt := &cos.AIPortraitMattingOptions{
+		CenterLayout:  1,
+		PaddingLayout: "500x500",
+	}
+	resp, err := c.CI.AIPortraitMatting(context.Background(), key, opt)
+	log_status(err)
+	fd, _ := os.OpenFile(localPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
+	io.Copy(fd, resp.Body)
+	fd.Close()
+}
+
+// 人像抠图(云上数据处理)
+func aiportraitMattingWhenCloud() {
+	u, _ := url.Parse("https://test-1253960454.cos.ap-chongqing.myqcloud.com")
+	b := &cos.BaseURL{BucketURL: u}
+	c := cos.NewClient(b, &http.Client{
+		Transport: &cos.AuthorizationTransport{
+			SecretID:  os.Getenv("COS_SECRETID"),
+			SecretKey: os.Getenv("COS_SECRETKEY"),
+			Transport: &debug.DebugRequestTransport{
+				RequestHeader: true,
+				// Notice when put a large file and set need the request body, might happend out of memory error.
+				RequestBody:    false,
+				ResponseHeader: true,
+				ResponseBody:   false,
+			},
+		},
+	})
+
+	pic := &cos.PicOperations{
+		IsPicInfo: 1,
+		Rules: []cos.PicOperationsRules{
+			{
+				FileId: "pic/cup_out.jpeg",
+				Rule:   "ci-process=AIPortraitMatting&center-layout=1&padding-layout=500x500",
+			},
+		},
+	}
+
+	key := "pic/cup.jpeg"
+	res, _, err := c.CI.ImageProcess(context.Background(), key, pic)
+	log_status(err)
+	fmt.Printf("%+v\n", res)
+}
+
+func main() {
+	aiportraitMattingWhenDownload()
+	// aiportraitMattingWhenUpload()
+	// aiportraitMattingWhenCloud()
+}