diff --git a/config/config.yaml b/config/config.yaml
index 90e8a6913..a7c1abc8d 100644
--- a/config/config.yaml
+++ b/config/config.yaml
@@ -73,11 +73,11 @@ object:
     secretAccessKey: openIM123            #秘钥
     isDistributedMod: false               #是否分布式多硬盘部署，如果是多硬盘部署，需要修改为true
   tencent: #tencent cos
-    appID:
-    region:
-    bucket:
-    secretID:
-    secretKey:
+    appID: 1314570205
+    region: ap-guangzhou
+    bucket: openim-test-1314570205
+    secretID: AKIDypY3K8lJk3NYVHqBXkneH5pMhsQFtKWX
+    secretKey: MZdXKxb9WhedR6dzAAzZyEVfgeR1NVP6
   ali: #ali oss
     regionID:
     accessKeyID:
diff --git a/go.mod b/go.mod
index 0a8c1fd52..996933880 100644
--- a/go.mod
+++ b/go.mod
@@ -18,7 +18,7 @@ require (
 	github.com/jinzhu/copier v0.3.5
 	github.com/lestrrat-go/file-rotatelogs v2.4.0+incompatible
 	github.com/minio/minio-go/v7 v7.0.22
-	github.com/mitchellh/mapstructure v1.4.2
+	github.com/mitchellh/mapstructure v1.5.0
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.13.0
@@ -43,6 +43,8 @@ require (
 	github.com/go-sql-driver/mysql v1.6.0
 	github.com/go-zookeeper/zk v1.0.3
 	github.com/redis/go-redis/v9 v9.0.5
+	github.com/tencentyun/cos-go-sdk-v5 v0.7.41
+	gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22
 )
 
 require (
@@ -57,6 +59,7 @@ require (
 	github.com/bytedance/sonic v1.9.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
+	github.com/clbanning/mxj v1.8.4 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dustin/go-humanize v1.0.0 // indirect
@@ -70,6 +73,7 @@ require (
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/snappy v0.0.3 // indirect
 	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.2.3 // indirect
 	github.com/googleapis/gax-go/v2 v2.7.1 // indirect
 	github.com/hashicorp/go-uuid v1.0.2 // indirect
@@ -93,6 +97,7 @@ require (
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/mozillazg/go-httpheader v0.4.0 // indirect
 	github.com/onsi/ginkgo v1.16.5 // indirect
 	github.com/onsi/gomega v1.18.1 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
diff --git a/go.sum b/go.sum
index 443d6cb9d..bd13838a0 100644
--- a/go.sum
+++ b/go.sum
@@ -51,6 +51,7 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/OpenIMSDK/open_utils v1.0.8 h1:IopxWgJwEF5ZAPsRuiZZOfcxNOQOCt/p8VDENcHN9r4=
 github.com/OpenIMSDK/open_utils v1.0.8/go.mod h1:FLoaQblWUVKQgqt2LrNzfSZLT6D3DICBn1kcOMDLUOI=
+github.com/QcloudApi/qcloud_sign_golang v0.0.0-20141224014652-e4130a326409/go.mod h1:1pk82RBxDY/JZnPQrtqHlUFfCctgdorsd9M06fMynOM=
 github.com/Shopify/sarama v1.29.0 h1:ARid8o8oieau9XrHI55f/L3EoRAhm9px6sonbD7yuUE=
 github.com/Shopify/sarama v1.29.0/go.mod h1:2QpgD79wpdAESqNQMxNc0KYMkycd4slxGdV3TWSVqrU=
 github.com/Shopify/toxiproxy v2.1.4+incompatible h1:TKdv8HiTLgE5wdJuEML90aBgNWsokNbMijUGhmcoBJc=
@@ -83,6 +84,8 @@ github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583j
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/clbanning/mxj v1.8.4 h1:HuhwZtbyvyOw+3Z1AowPkU87JkJUSv751ELWaiTpj8I=
+github.com/clbanning/mxj v1.8.4/go.mod h1:BVjHeAH+rl9rs6f+QIpeRl0tfu10SXn1pUSa5PVGJng=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
@@ -202,6 +205,9 @@ github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
+github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD/fhyJ8=
+github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17icRSOU623lUBU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/martian v2.1.0+incompatible h1:/CP5g8u/VJHijgedC/Legn3BAbAaWPgecwXBIDzw5no=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
@@ -216,6 +222,7 @@ github.com/google/pprof v0.0.0-20200430221834-fc25d7d30c6d/go.mod h1:ZgVRPoUq/hf
 github.com/google/pprof v0.0.0-20200708004538-1a94d8640e99/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
 github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
+github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -314,8 +321,9 @@ github.com/minio/sha256-simd v0.1.1 h1:5QHSlgo3nt5yKOJrC7W8w7X+NFl8cMPZm96iu8kKU
 github.com/minio/sha256-simd v0.1.1/go.mod h1:B5e1o+1/KgNmWrSQK08Y6Z1Vb5pwIktudl0J58iy0KM=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
-github.com/mitchellh/mapstructure v1.4.2 h1:6h7AQ0yhTcIsmFmnAwQls75jp2Gzs4iB8W7pjMO+rqo=
-github.com/mitchellh/mapstructure v1.4.2/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/mitchellh/mapstructure v1.4.3/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
+github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -324,6 +332,9 @@ github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3Rllmb
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
 github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
+github.com/mozillazg/go-httpheader v0.2.1/go.mod h1:jJ8xECTlalr6ValeXYdOF8fFUISeBAdw6E61aqQma60=
+github.com/mozillazg/go-httpheader v0.4.0 h1:aBn6aRXtFzyDLZ4VIRLsZbbJloagQfMnCiYgOq6hK4w=
+github.com/mozillazg/go-httpheader v0.4.0/go.mod h1:PuT8h0pw6efvp8ZeUec1Rs7dwjK08bt6gKSReGMqtdA=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
@@ -412,6 +423,10 @@ github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.3 h1:RP3t2pwF7cMEbC1dqtB6poj3niw/9gnV4Cjg5oW5gtY=
 github.com/stretchr/testify v1.8.3/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/common v1.0.194/go.mod h1:7sCQWVkxcsR38nffDW057DRGk8mUjK1Ing/EFOK8s8Y=
+github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/kms v1.0.194/go.mod h1:yrBKWhChnDqNz1xuXdSbWXG56XawEq0G5j1lg4VwBD4=
+github.com/tencentyun/cos-go-sdk-v5 v0.7.41 h1:iU0Li/Np78H4SBna0ECQoF3mpgi6ImLXU+doGzPFXGc=
+github.com/tencentyun/cos-go-sdk-v5 v0.7.41/go.mod h1:4dCEtLHGh8QPxHEkgq+nFaky7yZxQuYwgSJM87icDaw=
 github.com/tencentyun/qcloud-cos-sts-sdk v0.0.0-20210325043845-84a0811633ca h1:G/aIr3WiUesWHL2YGYgEqjM5tCAJ43Ml+0C18wDkWWs=
 github.com/tencentyun/qcloud-cos-sts-sdk v0.0.0-20210325043845-84a0811633ca/go.mod h1:b18KQa4IxHbxeseW1GcZox53d7J0z39VNONTxvvlkXw=
 github.com/tidwall/pretty v1.0.0 h1:HsD+QiTn7sK6flMKIvNmpqz1qrpP3Ps6jOKIKMooyg4=
@@ -784,6 +799,8 @@ gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/ini.v1 v1.66.2 h1:XfR1dOYubytKy4Shzc2LHrrGhU0lDCfDGG1yLPmpgsI=
 gopkg.in/ini.v1 v1.66.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22 h1:VpOs+IwYnYBaFnrNAeB8UUWtL3vEUnzSCL1nVjPhqrw=
+gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/internal/rpc/third/third.go b/internal/rpc/third/third.go
index 33d9b0a82..fbaa893e5 100644
--- a/internal/rpc/third/third.go
+++ b/internal/rpc/third/third.go
@@ -25,7 +25,14 @@ func Start(client discoveryregistry.SvcDiscoveryRegistry, server *grpc.Server) e
 	if err != nil {
 		return err
 	}
-	o, err := obj.NewMinioInterface()
+	// 根据配置文件策略选择 oss 方式
+	enable := config.Config.Object.Enable
+	var o obj.Interface
+	if enable == "minio" {
+		o, err = obj.NewMinioInterface()
+	} else if enable == "tencent" {
+		o, err = obj.NewCosClient()
+	}
 	if err != nil {
 		return err
 	}
diff --git a/pkg/common/db/obj/obj.go b/pkg/common/db/obj/obj.go
index e32c2479b..f10a42a1a 100644
--- a/pkg/common/db/obj/obj.go
+++ b/pkg/common/db/obj/obj.go
@@ -67,9 +67,9 @@ type Interface interface {
 	TempBucket() string
 	// DataBucket 永久存储的桶名
 	DataBucket() string
-	// PresignedGetURL 通过桶名和对象名返回URL
+	// PresignedGetURL 预签名授权 通过桶名和对象名返回URL
 	PresignedGetURL(ctx context.Context, bucket string, name string, expires time.Duration, opt *HeaderOption) (string, error)
-	// PresignedPutURL 申请上传,返回PUT的上传地址
+	// PresignedPutURL 预签名授权 申请上传,返回PUT的上传地址
 	PresignedPutURL(ctx context.Context, args *ApplyPutArgs) (string, error)
 	// GetObjectInfo 获取对象信息
 	GetObjectInfo(ctx context.Context, args *BucketObject) (*ObjectInfo, error)
diff --git a/pkg/common/db/obj/tx_oss.go b/pkg/common/db/obj/tx_oss.go
new file mode 100644
index 000000000..d80fea05e
--- /dev/null
+++ b/pkg/common/db/obj/tx_oss.go
@@ -0,0 +1,212 @@
+package obj
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+	"time"
+
+	"github.com/minio/minio-go/v7/pkg/s3utils"
+
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/config"
+	"github.com/tencentyun/cos-go-sdk-v5"
+)
+
+var conf = config.Config.Object.Tencent
+
+func create_url(bucket, region, source string) string {
+	return fmt.Sprintf("https://%s.cos.%s.myqcloud.com/%s", bucket, region, source)
+}
+
+func NewCosClient() (Interface, error) {
+	u, err := url.Parse(create_url(conf.Bucket, conf.Region, ""))
+	if err != nil {
+		return nil, fmt.Errorf("tencent cos url parse %w", err)
+	}
+	b := &cos.BaseURL{BucketURL: u}
+	c := cos.NewClient(b, &http.Client{
+		Transport: &cos.AuthorizationTransport{
+			SecretID:  conf.SecretID,  // 用户的 SecretId，建议使用子账号密钥，授权遵循最小权限指引，降低使用风险。子账号密钥获取可参考 https://cloud.tencent.com/document/product/598/37140
+			SecretKey: conf.SecretKey, // 用户的 SecretKey，建议使用子账号密钥，授权遵循最小权限指引，降低使用风险。子账号密钥获取可参考 https://cloud.tencent.com/document/product/598/37140
+		},
+	})
+	return &cosImpl{
+		client:     c,
+		tempBucket: conf.Bucket,
+	}, err
+}
+
+type cosImpl struct {
+	tempBucket string // 上传桶
+	//dataBucket string // 永久桶
+	urlstr string // 访问地址
+	client *cos.Client
+}
+
+func (c *cosImpl) Name() string {
+	return "tx_oss cos"
+}
+
+func (c *cosImpl) MinFragmentSize() int64 {
+	return 1024 * 1024 * 5 // 每个分片最小大小 tx_oss.absMinPartSize
+}
+
+func (c *cosImpl) MaxFragmentNum() int {
+	return 1000 // 最大分片数量 tx_oss.maxPartsCount
+}
+
+func (c *cosImpl) MinExpirationTime() time.Duration {
+	return time.Hour * 24
+}
+
+func (c *cosImpl) TempBucket() string {
+	return c.tempBucket
+}
+
+func (c *cosImpl) DataBucket() string {
+	//return c.dataBucket
+	return ""
+}
+
+func (c *cosImpl) PresignedGetURL(ctx context.Context, bucket string, name string, expires time.Duration, opt *HeaderOption) (string, error) {
+	// 参考文档：https://cloud.tencent.com/document/product/436/14116
+	// 获取对象访问 URL，用于匿名下载和分发
+	presignedGetURL, err := c.client.Object.GetPresignedURL(ctx, http.MethodGet, name, conf.SecretID, conf.SecretKey, time.Hour, nil)
+	if err != nil {
+		return "", err
+	}
+	return presignedGetURL.String(), nil
+}
+
+func (c *cosImpl) PresignedPutURL(ctx context.Context, args *ApplyPutArgs) (string, error) {
+	// 参考文档：https://cloud.tencent.com/document/product/436/14114
+
+	if args.Effective <= 0 {
+		return "", errors.New("EffectiveTime <= 0")
+	}
+	_, err := c.GetObjectInfo(ctx, &BucketObject{
+		Bucket: c.tempBucket,
+		Name:   args.Name,
+	})
+	if err == nil {
+		return "", fmt.Errorf("minio bucket %s name %s already exists", args.Bucket, args.Name)
+	} else if !c.IsNotFound(err) {
+		return "", err
+	}
+	// 获取预签名 URL
+	presignedPutURL, err := c.client.Object.GetPresignedURL(ctx, http.MethodPut, args.Name, conf.SecretID, conf.SecretKey, time.Hour, nil)
+	if err != nil {
+		return "", fmt.Errorf("minio apply error: %w", err)
+	}
+	return presignedPutURL.String(), nil
+}
+
+func (c *cosImpl) GetObjectInfo(ctx context.Context, args *BucketObject) (*ObjectInfo, error) {
+	// https://cloud.tencent.com/document/product/436/7745
+	// 新增参数 id 代表指定版本，如果不指定，默认查询对象最新版本
+	head, err := c.client.Object.Head(ctx, args.Name, nil, "")
+	if err != nil {
+		return nil, err
+	}
+	size, _ := strconv.ParseInt(head.Header.Get("Content-Length"), 10, 64)
+	return &ObjectInfo{
+		Size: size,
+		Hash: head.Header.Get("ETag"),
+	}, nil
+}
+
+func (c *cosImpl) CopyObject(ctx context.Context, src *BucketObject, dst *BucketObject) error {
+	srcURL := create_url(src.Bucket, conf.Region, src.Name)
+	_, _, err := c.client.Object.Copy(ctx, dst.Name, srcURL, nil)
+	if err == nil {
+		_, err = c.client.Object.Delete(ctx, srcURL, nil)
+		if err != nil {
+			// Error
+		}
+	}
+	return err
+}
+
+func (c *cosImpl) DeleteObject(ctx context.Context, info *BucketObject) error {
+	_, err := c.client.Object.Delete(ctx, info.Name)
+	return err
+}
+
+func (c *cosImpl) ComposeObject(ctx context.Context, src []BucketObject, dst *BucketObject) error {
+	//TODO implement me
+	panic("implement me")
+}
+
+func (c *cosImpl) IsNotFound(err error) bool {
+	ok, err := c.client.Object.IsExist(context.Background(), c.tempBucket)
+	if err == nil && ok {
+		fmt.Printf("object exists\n")
+		return true
+	} else if err != nil {
+		fmt.Printf("head object failed: %v\n", err)
+		return false
+	} else {
+		fmt.Printf("object does not exist\n")
+		return false
+	}
+}
+
+func (c *cosImpl) CheckName(name string) error {
+	return s3utils.CheckValidObjectName(name)
+}
+
+func (c *cosImpl) PutObject(ctx context.Context, info *BucketObject, reader io.Reader, size int64) (*ObjectInfo, error) {
+	/*// 采用高级接口, 无需用户指定 size
+	update, _, err := c.client.Object.Upload(
+		ctx, info.Name, info.Bucket, nil,
+	)
+	if err != nil {
+		return nil, err
+	}
+	return &ObjectInfo{
+		Hash: update.ETag,
+	}, nil*/
+	// Case1 使用 Put 上传对象
+	opt := &cos.ObjectPutOptions{
+		ObjectPutHeaderOptions: &cos.ObjectPutHeaderOptions{
+			ContentType: "text/html",
+		},
+		ACLHeaderOptions: &cos.ACLHeaderOptions{
+			// 如果不是必要操作，建议上传文件时不要给单个文件设置权限，避免达到限制。若不设置默认继承桶的权限。
+			XCosACL: "private",
+		},
+	}
+	resp, err := c.client.Object.Put(ctx, info.Name, reader, opt)
+	if err != nil {
+		return nil, err
+	}
+	return &ObjectInfo{
+		Hash: resp.Header.Get("ETag"),
+	}, nil
+}
+
+func (c *cosImpl) GetObject(ctx context.Context, info *BucketObject) (SizeReader, error) {
+	opt := &cos.MultiDownloadOptions{
+		ThreadPoolSize: 5,
+	}
+	update, err := c.client.Object.Download(
+		ctx, info.Name, info.Bucket, opt,
+	)
+	if err != nil {
+		return nil, err
+	}
+	size, _ := strconv.ParseInt(update.Header.Get("Content-Length"), 10, 64)
+	body := update.Body
+	if body == nil {
+		return nil, errors.New("response body is nil")
+	}
+	readCloser, ok := body.(io.ReadCloser)
+	if !ok {
+		return nil, errors.New("failed to convert response to ReadCloser")
+	}
+	return NewSizeReader(readCloser, size), nil
+}