diff --git a/openstack/client.go b/openstack/client.go
index d0f591a32..09f11dbd6 100644
--- a/openstack/client.go
+++ b/openstack/client.go
@@ -499,3 +499,9 @@ func NewDMSServiceV1(client *golangsdk.ProviderClient, eo golangsdk.EndpointOpts
 	sc, err := initClientOpts(client, eo, "dms")
 	return sc, err
 }
+
+// NewDCSServiceV1 creates a ServiceClient that may be used to access the v1 Distributed Cache Service.
+func NewDCSServiceV1(client *golangsdk.ProviderClient, eo golangsdk.EndpointOpts) (*golangsdk.ServiceClient, error) {
+	sc, err := initClientOpts(client, eo, "dcs")
+	return sc, err
+}
diff --git a/openstack/dcs/v1/availablezones/requests.go b/openstack/dcs/v1/availablezones/requests.go
new file mode 100644
index 000000000..47d242ca3
--- /dev/null
+++ b/openstack/dcs/v1/availablezones/requests.go
@@ -0,0 +1,11 @@
+package availablezones
+
+import (
+	"github.com/huaweicloud/golangsdk"
+)
+
+// Get available zones
+func Get(client *golangsdk.ServiceClient) (r GetResult) {
+	_, r.Err = client.Get(getURL(client), &r.Body, nil)
+	return
+}
diff --git a/openstack/dcs/v1/availablezones/results.go b/openstack/dcs/v1/availablezones/results.go
new file mode 100644
index 000000000..9b3949524
--- /dev/null
+++ b/openstack/dcs/v1/availablezones/results.go
@@ -0,0 +1,32 @@
+package availablezones
+
+import (
+	"github.com/huaweicloud/golangsdk"
+)
+
+// GetResponse response
+type GetResponse struct {
+	RegionID       string          `json:"regionId"`
+	AvailableZones []AvailableZone `json:"available_zones"`
+}
+
+// AvailableZone for dcs
+type AvailableZone struct {
+	ID                   string `json:"id"`
+	Code                 string `json:"code"`
+	Name                 string `json:"name"`
+	Port                 string `json:"port"`
+	ResourceAvailability string `json:"resource_availability"`
+}
+
+// GetResult contains the body of getting detailed
+type GetResult struct {
+	golangsdk.Result
+}
+
+// Extract from GetResult
+func (r GetResult) Extract() (*GetResponse, error) {
+	var s GetResponse
+	err := r.Result.ExtractInto(&s)
+	return &s, err
+}
diff --git a/openstack/dcs/v1/availablezones/urls.go b/openstack/dcs/v1/availablezones/urls.go
new file mode 100644
index 000000000..9ce0f01e8
--- /dev/null
+++ b/openstack/dcs/v1/availablezones/urls.go
@@ -0,0 +1,16 @@
+package availablezones
+
+import (
+	"strings"
+
+	"github.com/huaweicloud/golangsdk"
+)
+
+// endpoint/availablezones
+const resourcePath = "availableZones"
+
+// getURL will build the get url of get function
+func getURL(client *golangsdk.ServiceClient) string {
+	// remove projectid from endpoint
+	return strings.Replace(client.ServiceURL(resourcePath), "/"+client.ProjectID, "", -1)
+}
diff --git a/openstack/dcs/v1/instances/requests.go b/openstack/dcs/v1/instances/requests.go
new file mode 100644
index 000000000..68f0b3ff4
--- /dev/null
+++ b/openstack/dcs/v1/instances/requests.go
@@ -0,0 +1,198 @@
+package instances
+
+import (
+	"github.com/huaweicloud/golangsdk"
+)
+
+// CreateOpsBuilder is used for creating instance parameters.
+// any struct providing the parameters should implement this interface
+type CreateOpsBuilder interface {
+	ToInstanceCreateMap() (map[string]interface{}, error)
+}
+
+// CreateOps is a struct that contains all the parameters.
+type CreateOps struct {
+	// DCS instance name.
+	// An instance name is a string of 4–64 characters
+	// that contain letters, digits, underscores (_), and hyphens (-).
+	// An instance name must start with letters.
+	Name string `json:"name" required:"true"`
+
+	// Brief description of the DCS instance.
+	// A brief description supports up to 1024 characters.
+	Description string `json:"description,omitempty"`
+
+	// Cache engine, which is Redis.
+	Engine string `json:"engine" required:"true"`
+
+	// Cache engine version, which is 3.0.7.
+	EngineVersion string `json:"engine_version" required:"true"`
+
+	// Indicates the message storage space.
+	// Cache capacity.
+
+	// Unit: GB.
+	// For a DCS Redis instance in single-node or master/standby mode,
+	// the cache capacity can be 2 GB, 4 GB, 8 GB, 16 GB, 32 GB, or 64 GB.
+	// For a DCS Redis instance in cluster mode, the cache capacity can be
+	// 64, 128, 256, 512, or 1024 GB.
+	Capacity int `json:"capacity" required:"true"`
+
+	// Indicates the password of an instance.
+	// An instance password must meet the following complexity requirements:
+
+	// Password of a DCS instance.
+	// The password of a DCS Redis instance must meet
+	// the following complexity requirements:
+	// A string of 6–32 characters.
+	// Contains at least two of the following character types:
+	// Uppercase letters
+	// Lowercase letters
+	// Digits
+	// Special characters, such as `~!@#$%^&*()-_=+\|[{}]:'",<.>/?
+	Password string `json:"password" required:"true"`
+
+	// Tenant's VPC ID.
+	VPCID string `json:"vpc_id" required:"true"`
+
+	// Tenant's security group ID.
+	SecurityGroupID string `json:"security_group_id" required:"true"`
+
+	// Subnet ID.
+	SubnetID string `json:"subnet_id" required:"true"`
+
+	// IDs of the AZs where cache nodes reside.
+	// In the current version, only one AZ ID can be set in the request.
+	AvailableZones []string `json:"available_zones,omitempty"`
+
+	// Product ID used to differentiate DCS instance types.
+	ProductID string `json:"product_id" required:"true"`
+
+	// Backup policy.
+	// This parameter is available for master/standby DCS instances.
+	InstanceBackupPolicy InstanceBackupPolicy `json:"instance_backup_policy,omitempty"`
+
+	// Indicates the time at which a maintenance time window starts.
+	// Format: HH:mm:ss
+	MaintainBegin string `json:"maintain_begin,omitempty"`
+
+	// Indicates the time at which a maintenance time window ends.
+	// Format: HH:mm:ss
+	MaintainEnd string `json:"maintain_end,omitempty"`
+}
+
+// InstanceBackupPolicy for dcs
+type InstanceBackupPolicy struct {
+	// Retention time.
+	// Unit: day.
+	// Range: 1–7.
+	SaveDays int `json:"save_days" required:"true"`
+
+	// Backup type. Options:
+	// auto: automatic backup.
+	// manual: manual backup.
+	BackupType string `json:"backup_type" required:"true"`
+
+	// Backup plan.
+	PeriodicalBackupPlan PeriodicalBackupPlan `json:"periodical_backup_plan" required:"true"`
+}
+
+// PeriodicalBackupPlan for dcs
+type PeriodicalBackupPlan struct {
+	// Time at which backup starts.
+	// "00:00-01:00" indicates that backup starts at 00:00:00.
+	BeginAt int `json:"begin_at" required:"true"`
+
+	// Interval at which backup is performed.
+	// Currently, only weekly backup is supported.
+	PeriodType string `json:"period_type" required:"true"`
+
+	// Day in a week on which backup starts.
+	// Range: 1–7. Where: 1 indicates Monday; 7 indicates Sunday.
+	BackupAt []int `json:"backup_at" required:"true"`
+}
+
+// ToInstanceCreateMap is used for type convert
+func (ops CreateOps) ToInstanceCreateMap() (map[string]interface{}, error) {
+	return golangsdk.BuildRequestBody(ops, "")
+}
+
+// Create an instance with given parameters.
+func Create(client *golangsdk.ServiceClient, ops CreateOpsBuilder) (r CreateResult) {
+	b, err := ops.ToInstanceCreateMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+
+	_, r.Err = client.Post(createURL(client), b, &r.Body, &golangsdk.RequestOpts{
+		OkCodes: []int{200},
+	})
+
+	return
+}
+
+// Delete an instance by id
+func Delete(client *golangsdk.ServiceClient, id string) (r DeleteResult) {
+	_, r.Err = client.Delete(deleteURL(client, id), nil)
+	return
+}
+
+//UpdateOptsBuilder is an interface which can build the map paramter of update function
+type UpdateOptsBuilder interface {
+	ToInstanceUpdateMap() (map[string]interface{}, error)
+}
+
+//UpdateOpts is a struct which represents the parameters of update function
+type UpdateOpts struct {
+	// DCS instance name.
+	// An instance name is a string of 4–64 characters
+	// that contain letters, digits, underscores (_), and hyphens (-).
+	// An instance name must start with letters.
+	Name string `json:"name,omitempty"`
+
+	// Brief description of the DCS instance.
+	// A brief description supports up to 1024 characters.
+	Description string `json:"description,omitempty"`
+
+	// Backup policy.
+	// This parameter is available for master/standby DCS instances.
+	InstanceBackupPolicy InstanceBackupPolicy `json:"instance_backup_policy,omitempty"`
+
+	// Time at which the maintenance time window starts.
+	// Format: HH:mm:ss
+	MaintainBegin string `json:"maintain_begin,omitempty"`
+
+	// Time at which the maintenance time window ends.
+	// Format: HH:mm:ss
+	MaintainEnd string `json:"maintain_end,omitempty"`
+
+	// Security group ID.
+	SecurityGroupID string `json:"security_group_id,omitempty"`
+}
+
+// ToInstanceUpdateMap is used for type convert
+func (opts UpdateOpts) ToInstanceUpdateMap() (map[string]interface{}, error) {
+	return golangsdk.BuildRequestBody(opts, "")
+}
+
+// Update is a method which can be able to update the instance
+// via accessing to the service with Put method and parameters
+func Update(client *golangsdk.ServiceClient, id string, opts UpdateOptsBuilder) (r UpdateResult) {
+	body, err := opts.ToInstanceUpdateMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+
+	_, r.Err = client.Put(updateURL(client, id), body, &r.Body, &golangsdk.RequestOpts{
+		OkCodes: []int{204},
+	})
+	return
+}
+
+// Get a instance with detailed information by id
+func Get(client *golangsdk.ServiceClient, id string) (r GetResult) {
+	_, r.Err = client.Get(getURL(client, id), &r.Body, nil)
+	return
+}
diff --git a/openstack/dcs/v1/instances/results.go b/openstack/dcs/v1/instances/results.go
new file mode 100644
index 000000000..7ddf6d2b9
--- /dev/null
+++ b/openstack/dcs/v1/instances/results.go
@@ -0,0 +1,79 @@
+package instances
+
+import (
+	"github.com/huaweicloud/golangsdk"
+)
+
+// InstanceCreate response
+type InstanceCreate struct {
+	InstanceID string `json:"instance_id"`
+}
+
+// CreateResult is a struct that contains all the return parameters of creation
+type CreateResult struct {
+	golangsdk.Result
+}
+
+// Extract from CreateResult
+func (r CreateResult) Extract() (*InstanceCreate, error) {
+	var s InstanceCreate
+	err := r.Result.ExtractInto(&s)
+	return &s, err
+}
+
+// DeleteResult is a struct which contains the result of deletion
+type DeleteResult struct {
+	golangsdk.ErrResult
+}
+
+// Instance response
+type Instance struct {
+	Name                 string               `json:"name"`
+	Engine               string               `json:"engine"`
+	Capacity             int                  `json:"capacity"`
+	IP                   string               `json:"ip"`
+	Port                 int                  `json:"port"`
+	Status               string               `json:"status"`
+	Description          string               `json:"description"`
+	InstanceID           string               `json:"instance_id"`
+	ResourceSpecCode     string               `json:"resource_spec_code"`
+	EngineVersion        string               `json:"engine_version"`
+	InternalVersion      string               `json:"internal_version"`
+	ChargingMode         int                  `json:"charging_mode"`
+	VPCID                string               `json:"vpc_id"`
+	VPCName              string               `json:"vpc_name"`
+	CreatedAt            string               `json:"created_at"`
+	ErrorCode            string               `json:"error_code"`
+	ProductID            string               `json:"product_id"`
+	SecurityGroupID      string               `json:"security_group_id"`
+	SecurityGroupName    string               `json:"security_group_name"`
+	SubnetID             string               `json:"subnet_id"`
+	SubnetName           string               `json:"subnet_name"`
+	SubnetCIDR           string               `json:"subnet_cidr"`
+	AvailableZones       []string             `json:"available_zones"`
+	MaxMemory            int                  `json:"max_memory"`
+	UsedMemory           int                  `json:"used_memory"`
+	InstanceBackupPolicy InstanceBackupPolicy `json:"instance_backup_policy"`
+	UserID               string               `json:"user_id"`
+	UserName             string               `json:"user_name"`
+	OrderID              string               `json:"order_id"`
+	MaintainBegin        string               `json:"maintain_begin"`
+	MaintainEnd          string               `json:"maintain_end"`
+}
+
+// UpdateResult is a struct from which can get the result of update method
+type UpdateResult struct {
+	golangsdk.Result
+}
+
+// GetResult contains the body of getting detailed
+type GetResult struct {
+	golangsdk.Result
+}
+
+// Extract from GetResult
+func (r GetResult) Extract() (*Instance, error) {
+	var s Instance
+	err := r.Result.ExtractInto(&s)
+	return &s, err
+}
diff --git a/openstack/dcs/v1/instances/urls.go b/openstack/dcs/v1/instances/urls.go
new file mode 100644
index 000000000..9308ec2c8
--- /dev/null
+++ b/openstack/dcs/v1/instances/urls.go
@@ -0,0 +1,26 @@
+package instances
+
+import "github.com/huaweicloud/golangsdk"
+
+// endpoint/instances
+const resourcePath = "instances"
+
+// createURL will build the rest query url of creation
+func createURL(client *golangsdk.ServiceClient) string {
+	return client.ServiceURL(resourcePath)
+}
+
+// deleteURL will build the url of deletion
+func deleteURL(client *golangsdk.ServiceClient, id string) string {
+	return client.ServiceURL(resourcePath, id)
+}
+
+// updateURL will build the url of update
+func updateURL(c *golangsdk.ServiceClient, id string) string {
+	return c.ServiceURL(resourcePath, id)
+}
+
+// getURL will build the get url of get function
+func getURL(client *golangsdk.ServiceClient, id string) string {
+	return client.ServiceURL(resourcePath, id)
+}
diff --git a/openstack/dcs/v1/maintainwindows/requests.go b/openstack/dcs/v1/maintainwindows/requests.go
new file mode 100644
index 000000000..4f866c638
--- /dev/null
+++ b/openstack/dcs/v1/maintainwindows/requests.go
@@ -0,0 +1,11 @@
+package maintainwindows
+
+import (
+	"github.com/huaweicloud/golangsdk"
+)
+
+// Get maintain windows
+func Get(client *golangsdk.ServiceClient) (r GetResult) {
+	_, r.Err = client.Get(getURL(client), &r.Body, nil)
+	return
+}
diff --git a/openstack/dcs/v1/maintainwindows/results.go b/openstack/dcs/v1/maintainwindows/results.go
new file mode 100644
index 000000000..2605249ec
--- /dev/null
+++ b/openstack/dcs/v1/maintainwindows/results.go
@@ -0,0 +1,30 @@
+package maintainwindows
+
+import (
+	"github.com/huaweicloud/golangsdk"
+)
+
+// GetResponse response
+type GetResponse struct {
+	MaintainWindows []MaintainWindow `json:"maintain_windows"`
+}
+
+// MaintainWindow for dcs
+type MaintainWindow struct {
+	ID      int    `json:"seq"`
+	Begin   string `json:"begin"`
+	End     string `json:"end"`
+	Default bool   `json:"default"`
+}
+
+// GetResult contains the body of getting detailed
+type GetResult struct {
+	golangsdk.Result
+}
+
+// Extract from GetResult
+func (r GetResult) Extract() (*GetResponse, error) {
+	var s GetResponse
+	err := r.Result.ExtractInto(&s)
+	return &s, err
+}
diff --git a/openstack/dcs/v1/maintainwindows/urls.go b/openstack/dcs/v1/maintainwindows/urls.go
new file mode 100644
index 000000000..b5d8186b7
--- /dev/null
+++ b/openstack/dcs/v1/maintainwindows/urls.go
@@ -0,0 +1,16 @@
+package maintainwindows
+
+import (
+	"strings"
+
+	"github.com/huaweicloud/golangsdk"
+)
+
+// endpoint/instances/maintain-windows
+const resourcePath = "instances/maintain-windows"
+
+// getURL will build the get url of get function
+func getURL(client *golangsdk.ServiceClient) string {
+	// remove projectid from endpoint
+	return strings.Replace(client.ServiceURL(resourcePath), "/"+client.ProjectID, "", -1)
+}
diff --git a/openstack/dcs/v1/products/requests.go b/openstack/dcs/v1/products/requests.go
new file mode 100644
index 000000000..5542f6e0f
--- /dev/null
+++ b/openstack/dcs/v1/products/requests.go
@@ -0,0 +1,11 @@
+package products
+
+import (
+	"github.com/huaweicloud/golangsdk"
+)
+
+// Get products
+func Get(client *golangsdk.ServiceClient) (r GetResult) {
+	_, r.Err = client.Get(getURL(client), &r.Body, nil)
+	return
+}
diff --git a/openstack/dcs/v1/products/results.go b/openstack/dcs/v1/products/results.go
new file mode 100644
index 000000000..48fafe9eb
--- /dev/null
+++ b/openstack/dcs/v1/products/results.go
@@ -0,0 +1,34 @@
+package products
+
+import (
+	"github.com/huaweicloud/golangsdk"
+)
+
+// GetResponse response
+type GetResponse struct {
+	Products []Product `json:"products"`
+}
+
+// Product for dcs
+type Product struct {
+	Price        float64 `json:"price"`
+	Currency     string  `json:"currency"`
+	ProductID    string  `json:"product_id"`
+	SpecCode     string  `json:"spec_code"`
+	SpecDetails  string  `json:"spec_details"`
+	ChargingType string  `json:"charging_type"`
+	SpecDetails2 string  `json:"spec_details2"`
+	ProdType     string  `json:"prod_type"`
+}
+
+// GetResult contains the body of getting detailed
+type GetResult struct {
+	golangsdk.Result
+}
+
+// Extract from GetResult
+func (r GetResult) Extract() (*GetResponse, error) {
+	var s GetResponse
+	err := r.Result.ExtractInto(&s)
+	return &s, err
+}
diff --git a/openstack/dcs/v1/products/urls.go b/openstack/dcs/v1/products/urls.go
new file mode 100644
index 000000000..6ac6acc75
--- /dev/null
+++ b/openstack/dcs/v1/products/urls.go
@@ -0,0 +1,16 @@
+package products
+
+import (
+	"strings"
+
+	"github.com/huaweicloud/golangsdk"
+)
+
+// endpoint/products
+const resourcePath = "products"
+
+// getURL will build the get url of get function
+func getURL(client *golangsdk.ServiceClient) string {
+	// remove projectid from endpoint
+	return strings.Replace(client.ServiceURL(resourcePath), "/"+client.ProjectID, "", -1)
+}
diff --git a/openstack/dms/v1/instances/results.go b/openstack/dms/v1/instances/results.go
index 3ab328518..7e82e9fa5 100644
--- a/openstack/dms/v1/instances/results.go
+++ b/openstack/dms/v1/instances/results.go
@@ -41,7 +41,7 @@ type Instance struct {
 	InstanceID        string   `json:"instance_id"`
 	ResourceSpecCode  string   `json:"resource_spec_code"`
 	Type              string   `json:"type"`
-	ChargingMode      string   `json:"charging_mode"`
+	ChargingMode      int      `json:"charging_mode"`
 	VPCID             string   `json:"vpc_id"`
 	VPCName           string   `json:"vpc_name"`
 	CreatedAt         string   `json:"created_at"`