diff --git a/openstack/ecs/v1/nics/requests.go b/openstack/ecs/v1/nics/requests.go
new file mode 100644
index 000000000..7d9bd0b28
--- /dev/null
+++ b/openstack/ecs/v1/nics/requests.go
@@ -0,0 +1,88 @@
+package nics
+
+import (
+	"github.com/huaweicloud/golangsdk"
+)
+
+// AssociateOptsBuilder allows extensions to
+// add additional parameters to the associate request.
+type AssociateOptsBuilder interface {
+	ToVIPAssociateMap() (map[string]interface{}, error)
+}
+
+// NicAssociateOpts is a struct for creation
+type NicAssociateOpts struct {
+	SubnetID       string `json:"subnet_id" required:"true"`
+	IPAddress      string `json:"ip_address" required:"true"`
+	ReverseBinding bool   `json:"reverse_binding" required:"true"`
+	DeviceOwner    string `json:"device_owner,omitempty"`
+}
+
+// AssociateOpts specifies the required information
+// to associate a Floating IP with an instance
+type AssociateOpts struct {
+	// Nic is associated by VIP.
+	Nic NicAssociateOpts `json:"nic" required:"true"`
+}
+
+// ToVIPAssociateMap constructs a request body from AssociateOpts.
+func (opts AssociateOpts) ToVIPAssociateMap() (map[string]interface{}, error) {
+	return golangsdk.BuildRequestBody(opts, "")
+}
+
+// AssociateVIP pairs an allocated VIP with a nic.
+func AssociateVIP(client *golangsdk.ServiceClient, id string, ops AssociateOptsBuilder) (r AssociateResult) {
+	b, err := ops.ToVIPAssociateMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+
+	_, r.Err = client.Put(associateURL(client, id), b, &r.Body, &golangsdk.RequestOpts{
+		OkCodes: []int{200},
+	})
+
+	return
+}
+
+// DisassociateOptsBuilder allows extensions to
+// add additional parameters to the Disassociate request.
+type DisassociateOptsBuilder interface {
+	ToVIPDisassociateMap() (map[string]interface{}, error)
+}
+
+// NicDisassociateOpts is a struct for disassociate
+type NicDisassociateOpts struct {
+}
+
+// DisassociateOpts specifies the required information
+// to associate a VIP with a nic
+type DisassociateOpts struct {
+	// Nic is associated by VIP.
+	Nic NicDisassociateOpts `json:"nic" required:"true"`
+}
+
+// ToVIPDisassociateMap constructs a request body from DisassociateOpts.
+func (opts DisassociateOpts) ToVIPDisassociateMap() (map[string]interface{}, error) {
+	return golangsdk.BuildRequestBody(opts, "")
+}
+
+// DisassociateVIP pairs an allocated VIP with a nic.
+func DisassociateVIP(client *golangsdk.ServiceClient, id string, ops DisassociateOptsBuilder) (r DisassociateResult) {
+	b, err := ops.ToVIPDisassociateMap()
+	if b != nil {
+		b["subnet_id"] = ""
+		b["ip_address"] = ""
+		b["reverse_binding"] = false
+	}
+	if err != nil {
+		r.Err = err
+		return
+	}
+
+	_, r.Err = client.Put(disassociateURL(client, id), b, &r.Body, &golangsdk.RequestOpts{
+		OkCodes: []int{200},
+	})
+
+	return
+}
diff --git a/openstack/ecs/v1/nics/results.go b/openstack/ecs/v1/nics/results.go
new file mode 100644
index 000000000..6fe5a73e5
--- /dev/null
+++ b/openstack/ecs/v1/nics/results.go
@@ -0,0 +1,30 @@
+package nics
+
+import "github.com/huaweicloud/golangsdk"
+
+// Nic defines results
+type Nic struct {
+	PortID string `json:"port_id"`
+}
+
+// AssociateResult is the response from a Associate operation.
+type AssociateResult struct {
+	golangsdk.Result
+}
+
+// Extract from AssociateResult
+func (r AssociateResult) Extract() (*Nic, error) {
+	s := &Nic{}
+	return s, r.ExtractInto(s)
+}
+
+// DisassociateResult is the response from a Disassociate operation.
+type DisassociateResult struct {
+	golangsdk.Result
+}
+
+// Extract from DisassociateResult
+func (r DisassociateResult) Extract() (*Nic, error) {
+	s := &Nic{}
+	return s, r.ExtractInto(s)
+}
diff --git a/openstack/ecs/v1/nics/urls.go b/openstack/ecs/v1/nics/urls.go
new file mode 100644
index 000000000..64661df64
--- /dev/null
+++ b/openstack/ecs/v1/nics/urls.go
@@ -0,0 +1,19 @@
+package nics
+
+import "github.com/huaweicloud/golangsdk"
+
+// endpoint/cloudservers/
+const (
+	rootPath     = "cloudservers"
+	resourcePath = "nics"
+)
+
+// associateURL will build associate private ip from nic
+func associateURL(c *golangsdk.ServiceClient, id string) string {
+	return c.ServiceURL(rootPath, resourcePath, id)
+}
+
+// disassociateURL will build disassociate private ip from nic
+func disassociateURL(c *golangsdk.ServiceClient, id string) string {
+	return c.ServiceURL(rootPath, resourcePath, id)
+}