diff --git a/src/components/FormItem/MemberAllocator/index.jsx b/src/components/FormItem/MemberAllocator/index.jsx
index ccfa5c91..6232f7f5 100644
--- a/src/components/FormItem/MemberAllocator/index.jsx
+++ b/src/components/FormItem/MemberAllocator/index.jsx
@@ -25,7 +25,13 @@ import Item from './Item';
 const { isIPv4, isIpv6 } = ipValidate;
 
 const MemberAllocator = ({ componentProps, formItemProps }) => {
-  const { maxNumber = 10, ports, isLoading, members = [] } = componentProps;
+  const {
+    maxNumber = 10,
+    ports,
+    isLoading,
+    members = [],
+    lbSubnetId,
+  } = componentProps;
   const { name, onChange } = formItemProps;
 
   const [currentFieldsLength, setLength] = useState(0);
@@ -51,6 +57,9 @@ const MemberAllocator = ({ componentProps, formItemProps }) => {
           xs: 18,
           xm: 12,
         }}
+        extra={t(
+          'If you choose a port which subnet is different from the subnet of LB, please ensure connectivity between the two.'
+        )}
       >
         <SelectTable
           maxSelectedCount={-1}
@@ -151,6 +160,23 @@ const MemberAllocator = ({ componentProps, formItemProps }) => {
               filterFunc: (record, val) =>
                 record.some((item) => item.ip_address.indexOf(val) > -1),
             },
+            {
+              label: t('Same subnet with LB'),
+              name: 'origin_data',
+              options: [
+                {
+                  label: t('true'),
+                  key: true,
+                },
+              ],
+              filterFunc: (record, val) => {
+                return val
+                  ? record.fixed_ips.some(
+                      (item) => item.subnet_id === lbSubnetId
+                    )
+                  : true;
+              },
+            },
           ]}
         />
       </Form.Item>
@@ -280,7 +306,12 @@ const MemberAllocator = ({ componentProps, formItemProps }) => {
         </Form.List>
       </Form.Item>
       {currentFieldsLength < maxNumber && (
-        <Form.Item label={t('Add External Members')}>
+        <Form.Item
+          label={t('Add External Members')}
+          extra={t(
+            'The ip of external members can be any, including the public network ip.'
+          )}
+        >
           <Button
             type="dashed"
             onClick={() => {
diff --git a/src/locales/en.json b/src/locales/en.json
index c9921f2b..67f7301f 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -917,6 +917,7 @@
   "If the capacity of the disk is large,the type modify operation may takes several hours. Please be cautious.": "If the capacity of the disk is large,the type modify operation may takes several hours. Please be cautious.",
   "If the volume associated with the snapshot has changed the volume type, please modify this option manually; if the volume associated with the snapshot keeps the volume type unchanged, please ignore this option. (no need to change).": "If the volume associated with the snapshot has changed the volume type, please modify this option manually; if the volume associated with the snapshot keeps the volume type unchanged, please ignore this option. (no need to change).",
   "If you are not authorized to access any project, or if the project you are involved in has been deleted or disabled, contact the platform administrator to reassign the project": "If you are not authorized to access any project, or if the project you are involved in has been deleted or disabled, contact the platform administrator to reassign the project",
+  "If you choose a port which subnet is different from the subnet of LB, please ensure connectivity between the two.": "If you choose a port which subnet is different from the subnet of LB, please ensure connectivity between the two.",
   "If you do not fill in parameters such as cpus, memory_mb, local_gb, cpu_arch, etc., you can automatically inject the configuration and Mac address of the physical machine by performing the \"Auto Inspect\" operation.": "If you do not fill in parameters such as cpus, memory_mb, local_gb, cpu_arch, etc., you can automatically inject the configuration and Mac address of the physical machine by performing the \"Auto Inspect\" operation.",
   "If you still want to keep the disk data, it is recommended that you create a snapshot for the disk before deleting.": "If you still want to keep the disk data, it is recommended that you create a snapshot for the disk before deleting.",
   "Illegal JSON scheme": "Illegal JSON scheme",
@@ -1658,6 +1659,7 @@
   "SNAT rules": "SNAT rules",
   "SOURCE_IP": "Source IP",
   "Saint Vincent and the Grenadines": "Saint Vincent and the Grenadines",
+  "Same subnet with LB": "Same subnet with LB",
   "Samoa": "Samoa",
   "San Marino": "San Marino",
   "Sao Tome and Principe": "Sao Tome and Principe",
@@ -1881,6 +1883,7 @@
   "The instances in the anti-affinity group are allocated to different physical machines as much as possible. When there are no more physical machines to allocate, the normal allocation strategy is returned.": "The instances in the anti-affinity group are allocated to different physical machines as much as possible. When there are no more physical machines to allocate, the normal allocation strategy is returned.",
   "The instances in the anti-affinity group are strictly allocated to different physical machines. When there are no more physical machines to allocate, the allocation fails.": "The instances in the anti-affinity group are strictly allocated to different physical machines. When there are no more physical machines to allocate, the allocation fails.",
   "The ip is not within the allocated pool!": "The ip is not within the allocated pool!",
+  "The ip of external members can be any, including the public network ip.": "The ip of external members can be any, including the public network ip.",
   "The maximum transmission unit (MTU) value to address fragmentation. Minimum value is 68 for IPv4, and 1280 for IPv6.": "The maximum transmission unit (MTU) value to address fragmentation. Minimum value is 68 for IPv4, and 1280 for IPv6.",
   "The name cannot be modified after creation": "The name cannot be modified after creation",
   "The name of the physical network to which a port is connected": "The name of the physical network to which a port is connected",
diff --git a/src/locales/zh.json b/src/locales/zh.json
index 9950a595..832e3dda 100644
--- a/src/locales/zh.json
+++ b/src/locales/zh.json
@@ -917,6 +917,7 @@
   "If the capacity of the disk is large,the type modify operation may takes several hours. Please be cautious.": "如果云硬盘容量较大，修改云硬盘类型可能需要花费几个小时，请您谨慎操作。",
   "If the volume associated with the snapshot has changed the volume type, please modify this option manually; if the volume associated with the snapshot keeps the volume type unchanged, please ignore this option. (no need to change).": "若快照关联的云硬盘修改过云硬盘类型，请手动修改此选项；若快照关联的云硬盘保持云硬盘类型不变，请忽略此选项（不需要做变更）。",
   "If you are not authorized to access any project, or if the project you are involved in has been deleted or disabled, contact the platform administrator to reassign the project": "您未被授权访问任何项目，或您参与中的项目已被删除或禁用，可联系平台管理员重新分配项目",
+  "If you choose a port which subnet is different from the subnet of LB, please ensure connectivity between the two.": "如果你选择了和LB子网不同的网卡，请确保两者的连通性。",
   "If you do not fill in parameters such as cpus, memory_mb, local_gb, cpu_arch, etc., you can automatically inject the configuration and Mac address of the physical machine by performing the \"Auto Inspect\" operation.": "如不填写cpus、memory_mb、local_gb、cpu_arch等参数，您可以通过执行“自动检测”操作来自动注入物理机的配置和 Mac 地址。",
   "If you still want to keep the disk data, it is recommended that you create a snapshot for the disk before deleting.": "如果您仍想保留云硬盘数据，建议您在删除之前为云硬盘创建快照。",
   "Illegal JSON scheme": "不合法的JSON格式",
@@ -1658,6 +1659,7 @@
   "SNAT rules": "SNAT规则",
   "SOURCE_IP": "源IP算法",
   "Saint Vincent and the Grenadines": "圣文森特和格林纳丁斯",
+  "Same subnet with LB": "与LB子网相同",
   "Samoa": "美属萨摩亚",
   "San Marino": "圣马力诺共和国",
   "Sao Tome and Principe": "圣多美和普林西比",
@@ -1881,6 +1883,7 @@
   "The instances in the anti-affinity group are allocated to different physical machines as much as possible. When there are no more physical machines to allocate, the normal allocation strategy is returned.": "将反亲和组内的云主机尽量分配到不同物理机上，当没有更多物理机可分配时，回归普通分配策略。",
   "The instances in the anti-affinity group are strictly allocated to different physical machines. When there are no more physical machines to allocate, the allocation fails.": "将反亲和组内的云主机严格分配到不同物理机上，当没有更多物理机可分配时，则分配失败。",
   "The ip is not within the allocated pool!": "该ip不在分配的资源池范围内！",
+  "The ip of external members can be any, including the public network ip.": "外部成员的IP可以是任何IP，包括公网IP。",
   "The maximum transmission unit (MTU) value to address fragmentation. Minimum value is 68 for IPv4, and 1280 for IPv6.": "地址片段的最大传输单位。IPv4最小68，IPv6最小1280。",
   "The name cannot be modified after creation": "名称创建后不可修改",
   "The name of the physical network to which a port is connected": "端口连接到的物理网络的名称",
diff --git a/src/pages/network/containers/LoadBalancers/Listener/Detail/Member/Actions/CreateMember.jsx b/src/pages/network/containers/LoadBalancers/Listener/Detail/Member/Actions/CreateMember.jsx
index 674f5360..6634353c 100644
--- a/src/pages/network/containers/LoadBalancers/Listener/Detail/Member/Actions/CreateMember.jsx
+++ b/src/pages/network/containers/LoadBalancers/Listener/Detail/Member/Actions/CreateMember.jsx
@@ -18,7 +18,7 @@ import { ModalAction } from 'containers/Action';
 import { PoolMemberStore } from 'stores/octavia/pool-member';
 import { VirtualAdapterStore } from 'stores/neutron/virtual-adapter';
 import { toJS } from 'mobx';
-import { uniqWith } from 'lodash';
+import { uniqWith, get } from 'lodash';
 import globalLbaasStore from 'stores/octavia/loadbalancer';
 import isEqual from 'react-fast-compare';
 
@@ -43,6 +43,7 @@ export default class CreateAction extends ModalAction {
   init() {
     this.store = new VirtualAdapterStore();
     this.memberStore = new PoolMemberStore();
+    this.lbDetail = {};
     this.state = {
       ports: [],
     };
@@ -56,26 +57,16 @@ export default class CreateAction extends ModalAction {
       })
       .then((lb) => {
         this.lbDetail = lb;
-        return this.store.fetchList({ network_id: lb.vip_network_id });
+        return this.store.fetchList();
       })
       .then((ports) => {
         this.setState({
           ports: ports
             .filter(
               (port) =>
-                port.fixed_ips.some(
-                  (fixed_ip) =>
-                    fixed_ip.subnet_id === this.lbDetail.vip_subnet_id
-                ) &&
                 port.device_owner !== 'network:dhcp' &&
                 port.device_owner !== 'network:router_gateway'
             )
-            .map((item) => {
-              item.fixed_ips = item.fixed_ips.filter(
-                (fixed_ip) => fixed_ip.subnet_id === this.lbDetail.vip_subnet_id
-              );
-              return item;
-            }),
         });
       });
   }
@@ -122,6 +113,7 @@ export default class CreateAction extends ModalAction {
       {
         name: 'extMembers',
         type: 'member-allocator',
+        lbSubnetId: get(this.lbDetail, 'vip_subnet_id', ''),
         isLoading: this.store.list.isLoading,
         ports: this.state.ports,
         members: this.memberStore.list.data,
diff --git a/src/pages/network/containers/LoadBalancers/StepCreateComponents/MemberStep/index.jsx b/src/pages/network/containers/LoadBalancers/StepCreateComponents/MemberStep/index.jsx
index e747f134..ac9aa88c 100644
--- a/src/pages/network/containers/LoadBalancers/StepCreateComponents/MemberStep/index.jsx
+++ b/src/pages/network/containers/LoadBalancers/StepCreateComponents/MemberStep/index.jsx
@@ -16,6 +16,7 @@ import { inject, observer } from 'mobx-react';
 import Base from 'components/Form';
 import { PortStore } from 'stores/neutron/port';
 import { VirtualAdapterStore } from 'stores/neutron/virtual-adapter';
+import { get } from 'lodash';
 
 @inject('rootStore')
 @observer
@@ -26,25 +27,14 @@ export default class MemberStep extends Base {
     this.state = {
       ports: [],
     };
-    const network_id = this.props.context.vip_network_id.selectedRowKeys[0];
-    const subnet_id = this.props.context.vip_address[0].subnet;
-    this.store.fetchList({ network_id }).then((ports) => {
+    this.store.fetchList().then((ports) => {
       this.setState({
         ports: ports
           .filter(
             (port) =>
-              port.fixed_ips.some(
-                (fixed_ip) => fixed_ip.subnet_id === subnet_id
-              ) &&
               port.device_owner !== 'network:dhcp' &&
               port.device_owner !== 'network:router_gateway'
           )
-          .map((item) => {
-            item.fixed_ips = item.fixed_ips.filter(
-              (fixed_ip) => fixed_ip.subnet_id === subnet_id
-            );
-            return item;
-          }),
       });
     });
   }
@@ -71,10 +61,12 @@ export default class MemberStep extends Base {
   }
 
   get formItems() {
+    const subnet_id = get(this.props.context, 'vip_address[0].subnet', '');
     return [
       {
         name: 'extMembers',
         type: 'member-allocator',
+        lbSubnetId: subnet_id,
         isLoading: this.store.list.isLoading,
         ports: this.state.ports,
       },