diff --git a/example/bucket/deleteInventory.go b/example/bucket/deleteInventory.go
deleted file mode 100644
index 442d034..0000000
--- a/example/bucket/deleteInventory.go
+++ /dev/null
@@ -1,37 +0,0 @@
-package main
-
-import (
-	"context"
-	"net/url"
-	"os"
-
-	"net/http"
-
-	"github.com/tencentyun/cos-go-sdk-v5"
-	"github.com/tencentyun/cos-go-sdk-v5/debug"
-)
-
-func main() {
-	u, _ := url.Parse("https://alangz-1251668577.cos.ap-guangzhou.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:    true,
-				ResponseHeader: true,
-				ResponseBody:   true,
-			},
-		},
-	})
-
-	id := "test1"
-	_, err := c.Bucket.DeleteBucketInventory(context.Background(), id)
-	if err != nil {
-		panic(err)
-	}
-}
diff --git a/example/bucket/getInventory.go b/example/bucket/getInventory.go
deleted file mode 100644
index fa5768c..0000000
--- a/example/bucket/getInventory.go
+++ /dev/null
@@ -1,38 +0,0 @@
-package main
-
-import (
-	"context"
-	"net/url"
-	"os"
-
-	"net/http"
-
-	"github.com/tencentyun/cos-go-sdk-v5"
-	"github.com/tencentyun/cos-go-sdk-v5/debug"
-)
-
-func main() {
-	u, _ := url.Parse("https://alangz-1251668577.cos.ap-guangzhou.myqcloud.com")
-	// u, _ := url.Parse("https://test-1253846586.cos.ap-guangzhou.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:    true,
-				ResponseHeader: true,
-				ResponseBody:   true,
-			},
-		},
-	})
-
-	id := "test1"
-	_, _, err := c.Bucket.GetBucketInventory(context.Background(), id)
-	if err != nil {
-		panic(err)
-	}
-}
diff --git a/example/bucket/getLogging.go b/example/bucket/getLogging.go
deleted file mode 100644
index 4254321..0000000
--- a/example/bucket/getLogging.go
+++ /dev/null
@@ -1,41 +0,0 @@
-package main
-
-import (
-	"context"
-	"fmt"
-	"net/url"
-	"os"
-
-	"net/http"
-
-	"github.com/tencentyun/cos-go-sdk-v5"
-	"github.com/tencentyun/cos-go-sdk-v5/debug"
-)
-
-func main() {
-	u, _ := url.Parse("https://alangz-1251668577.cos.ap-guangzhou.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:    true,
-				ResponseHeader: true,
-				ResponseBody:   true,
-			},
-		},
-	})
-
-	v, _, err := c.Bucket.GetBucketLogging(context.Background())
-	if err != nil {
-		panic(err)
-	}
-
-	if v.LoggingEnabled != nil {
-		fmt.Printf("target bucket is %s \n", v.LoggingEnabled.TargetBucket)
-	}
-}
diff --git a/example/bucket/listInventoryConfig.go b/example/bucket/listInventoryConfig.go
deleted file mode 100644
index 136c35f..0000000
--- a/example/bucket/listInventoryConfig.go
+++ /dev/null
@@ -1,40 +0,0 @@
-package main
-
-import (
-	"context"
-	"fmt"
-	"net/url"
-	"os"
-
-	"net/http"
-
-	"github.com/tencentyun/cos-go-sdk-v5"
-	"github.com/tencentyun/cos-go-sdk-v5/debug"
-)
-
-func main() {
-	u, _ := url.Parse("https://alangz-1251668577.cos.ap-guangzhou.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:    true,
-				ResponseHeader: true,
-				ResponseBody:   true,
-			},
-		},
-	})
-
-	v, _, err := c.Bucket.ListBucketInventoryConfigurations(context.Background(), "")
-	if err != nil {
-		panic(err)
-	}
-	for _, p := range v.InventoryConfigurations {
-		fmt.Printf("%s\n", p.Destination.BucketDestination.Bucket)
-	}
-}
diff --git a/example/bucket/putInventory.go b/example/bucket/putInventory.go
deleted file mode 100644
index 1101a0f..0000000
--- a/example/bucket/putInventory.go
+++ /dev/null
@@ -1,61 +0,0 @@
-package main
-
-import (
-	"context"
-	"net/url"
-	"os"
-
-	"net/http"
-
-	"github.com/tencentyun/cos-go-sdk-v5"
-	"github.com/tencentyun/cos-go-sdk-v5/debug"
-)
-
-func main() {
-	u, _ := url.Parse("https://alangz-1251668577.cos.ap-guangzhou.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:    true,
-				ResponseHeader: true,
-				ResponseBody:   true,
-			},
-		},
-	})
-
-	id := "test1"
-	opt := &cos.BucketPutInventoryOptions{
-		ID: id,
-		// True or False
-		IsEnabled:              "True",
-		IncludedObjectVersions: "All",
-		Filter: &cos.BucketInventoryFilter{
-			Prefix: "test",
-		},
-		OptionalFields: &cos.BucketInventoryOptionalFields{
-			BucketInventoryFields: []string{
-				"Size", "LastModifiedDate",
-			},
-		},
-		Schedule: &cos.BucketInventorySchedule{
-			// Weekly or Daily
-			Frequency: "Daily",
-		},
-		Destination: &cos.BucketInventoryDestination{
-			BucketDestination: &cos.BucketInventoryDestinationContent{
-				Bucket: "qcs::cos:ap-guangzhou::alangz-1251668577",
-				Format: "CSV",
-			},
-		},
-	}
-	_, err := c.Bucket.PutBucketInventory(context.Background(), id, opt)
-	if err != nil {
-		panic(err)
-	}
-}
diff --git a/example/bucket/putLogging.go b/example/bucket/putLogging.go
deleted file mode 100644
index 5d0167a..0000000
--- a/example/bucket/putLogging.go
+++ /dev/null
@@ -1,43 +0,0 @@
-package main
-
-import (
-	"context"
-	"net/url"
-	"os"
-
-	"net/http"
-
-	"github.com/tencentyun/cos-go-sdk-v5"
-	"github.com/tencentyun/cos-go-sdk-v5/debug"
-)
-
-func main() {
-	u, _ := url.Parse("https://alangz-1251668577.cos.ap-guangzhou.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:    true,
-				ResponseHeader: true,
-				ResponseBody:   true,
-			},
-		},
-	})
-
-	opt := &cos.BucketPutLoggingOptions{
-		LoggingEnabled: &cos.BucketLoggingEnabled{
-			// The bucket must same region.
-			TargetBucket: "alangzz-1251668577",
-		},
-	}
-
-	_, err := c.Bucket.PutBucketLogging(context.Background(), opt)
-	if err != nil {
-		panic(err)
-	}
-}