diff --git a/src/api/rest/docs/docs.go b/src/api/rest/docs/docs.go
index 50a8ac6fa..a8b0c2a99 100644
--- a/src/api/rest/docs/docs.go
+++ b/src/api/rest/docs/docs.go
@@ -8330,23 +8330,28 @@ const docTemplate = `{
             "properties": {
                 "interval": {
                     "description": "secs, Interval time between health checks.",
-                    "type": "string"
+                    "type": "string",
+                    "example": "default"
                 },
                 "port": {
                     "description": "Listener Port or 1-65535",
-                    "type": "string"
+                    "type": "string",
+                    "example": "22"
                 },
                 "protocol": {
                     "description": "TCP|HTTP|HTTPS",
-                    "type": "string"
+                    "type": "string",
+                    "example": "TCP"
                 },
                 "threshold": {
                     "description": "num, The number of continuous health checks to change the VM status.",
-                    "type": "string"
+                    "type": "string",
+                    "example": "default"
                 },
                 "timeout": {
                     "description": "secs, Waiting time to decide an unhealthy VM when no response.",
-                    "type": "string"
+                    "type": "string",
+                    "example": "default"
                 }
             }
         },
@@ -8860,7 +8865,7 @@ const docTemplate = `{
                 },
                 "vmGroupId": {
                     "type": "string",
-                    "example": "group"
+                    "example": "group-1"
                 },
                 "vms": {
                     "type": "array",
@@ -9123,6 +9128,7 @@ const docTemplate = `{
                 "listener",
                 "name",
                 "scope",
+                "targetGroup",
                 "type",
                 "vNetId"
             ],
diff --git a/src/api/rest/docs/swagger.json b/src/api/rest/docs/swagger.json
index c00e6d2de..69c108ac7 100644
--- a/src/api/rest/docs/swagger.json
+++ b/src/api/rest/docs/swagger.json
@@ -8322,23 +8322,28 @@
             "properties": {
                 "interval": {
                     "description": "secs, Interval time between health checks.",
-                    "type": "string"
+                    "type": "string",
+                    "example": "default"
                 },
                 "port": {
                     "description": "Listener Port or 1-65535",
-                    "type": "string"
+                    "type": "string",
+                    "example": "22"
                 },
                 "protocol": {
                     "description": "TCP|HTTP|HTTPS",
-                    "type": "string"
+                    "type": "string",
+                    "example": "TCP"
                 },
                 "threshold": {
                     "description": "num, The number of continuous health checks to change the VM status.",
-                    "type": "string"
+                    "type": "string",
+                    "example": "default"
                 },
                 "timeout": {
                     "description": "secs, Waiting time to decide an unhealthy VM when no response.",
-                    "type": "string"
+                    "type": "string",
+                    "example": "default"
                 }
             }
         },
@@ -8852,7 +8857,7 @@
                 },
                 "vmGroupId": {
                     "type": "string",
-                    "example": "group"
+                    "example": "group-1"
                 },
                 "vms": {
                     "type": "array",
@@ -9115,6 +9120,7 @@
                 "listener",
                 "name",
                 "scope",
+                "targetGroup",
                 "type",
                 "vNetId"
             ],
diff --git a/src/api/rest/docs/swagger.yaml b/src/api/rest/docs/swagger.yaml
index 223ca9c84..3edb975a8 100644
--- a/src/api/rest/docs/swagger.yaml
+++ b/src/api/rest/docs/swagger.yaml
@@ -1268,19 +1268,24 @@ definitions:
     properties:
       interval:
         description: secs, Interval time between health checks.
+        example: default
         type: string
       port:
         description: Listener Port or 1-65535
+        example: "22"
         type: string
       protocol:
         description: TCP|HTTP|HTTPS
+        example: TCP
         type: string
       threshold:
         description: num, The number of continuous health checks to change the VM
           status.
+        example: default
         type: string
       timeout:
         description: secs, Waiting time to decide an unhealthy VM when no response.
+        example: default
         type: string
     type: object
   mcis.NLBListenerInfo:
@@ -1636,7 +1641,7 @@ definitions:
         example: TCP
         type: string
       vmGroupId:
-        example: group
+        example: group-1
         type: string
       vms:
         items:
@@ -1869,6 +1874,7 @@ definitions:
     - listener
     - name
     - scope
+    - targetGroup
     - type
     - vNetId
     type: object
diff --git a/src/core/mcis/nlb.go b/src/core/mcis/nlb.go
index d410b66bb..34752bb3f 100644
--- a/src/core/mcis/nlb.go
+++ b/src/core/mcis/nlb.go
@@ -57,11 +57,11 @@ type SpiderNLBReqInfo struct {
 }
 
 type NLBHealthCheckerReq struct {
-	Protocol  string // TCP|HTTP|HTTPS
-	Port      string // Listener Port or 1-65535
-	Interval  string // secs, Interval time between health checks.
-	Timeout   string // secs, Waiting time to decide an unhealthy VM when no response.
-	Threshold string // num, The number of continuous health checks to change the VM status.
+	Protocol  string `json:"protocol" example:"TCP"`      // TCP|HTTP|HTTPS
+	Port      string `json:"port" example:"22"`           // Listener Port or 1-65535
+	Interval  string `json:"interval" example:"default"`  // secs, Interval time between health checks.
+	Timeout   string `json:"timeout" example:"default"`   // secs, Waiting time to decide an unhealthy VM when no response.
+	Threshold string `json:"threshold" example:"default"` // num, The number of continuous health checks to change the VM status.
 }
 
 type SpiderNLBVMGroupReq struct {
@@ -140,7 +140,7 @@ type TBNLBTargetGroup struct {
 	Protocol string `json:"protocol" example:"TCP"` // TCP|HTTP|HTTPS
 	Port     string `json:"port" example:"22"`      // Listener Port or 1-65535
 
-	VmGroupId string   `json:"vmGroupId" example:"group"`
+	VmGroupId string   `json:"vmGroupId" example:"group-1"`
 	VMs       []string `json:"vms"`
 
 	CspID        string // Optional, May be Used by Driver.
@@ -164,7 +164,7 @@ type TbNLBReq struct { // Tumblebug
 
 	//------ Backend
 
-	TargetGroup   TBNLBTargetGroup    `json:"targetGroup"`
+	TargetGroup   TBNLBTargetGroup    `json:"targetGroup" validate:"required"`
 	HealthChecker NLBHealthCheckerReq `json:"healthChecker" validate:"required"`
 }