diff --git a/src/components/CustomNode.css b/src/components/CustomNode.css
index 7d7e674..7897c2a 100644
--- a/src/components/CustomNode.css
+++ b/src/components/CustomNode.css
@@ -98,4 +98,12 @@
   transform: translateY(1px) scale(0.995);
   background-color: #0f62d6; /* slightly darker on press */
   box-shadow: inset 0 1px 2px rgba(0,0,0,0.12);
+}
+
+.empty-tip {
+  font-size: 8px;
+  color: #999;
+  text-align: center;
+  margin-top: 10px;
+  margin-bottom: 10px;
 }
\ No newline at end of file
diff --git a/src/components/CustomNode.tsx b/src/components/CustomNode.tsx
index 404d411..597c32a 100644
--- a/src/components/CustomNode.tsx
+++ b/src/components/CustomNode.tsx
@@ -216,6 +216,7 @@ export default function CustomNode({
     }
   };
 
+  const empty = !(data.ipv4Address || data.ipv6Address);
   
   return (
     <div className={`custom-node ${selected ? 'selected' : ''}`}>
@@ -224,20 +225,22 @@ export default function CustomNode({
       </div>
 
       <div className='node-info'>
-        <div className="info-item">
+        {empty && <div className="empty-tip">未配置地址信息</div>}
+
+        {data.ipv4Address && <div className="info-item">
           <span className="label">IPv4地址：</span>
           <span className="value">{data.ipv4Address || "未设置"}</span>
-        </div>
+        </div>}
         
-        <div className="info-item">
+        {data.ipv6Address && <div className="info-item">
           <span className="label">IPv6地址：</span>
           <span className="value">{data.ipv6Address || "未设置"}</span>
-        </div>
+        </div>}
 
-        <div className="info-item">
+        {data.listenAddress && <div className="info-item">
           <span className="label">监听地址：</span>
           <span className="value">{data.listenAddress || "未设置"}</span>
-        </div>
+        </div>}
       </div>
 
       <div className="node-actions">
diff --git a/src/components/SettingsEditor.tsx b/src/components/SettingsEditor.tsx
index 790de78..9e1e2c6 100644
--- a/src/components/SettingsEditor.tsx
+++ b/src/components/SettingsEditor.tsx
@@ -1,7 +1,9 @@
 import { useState, ReactNode } from 'react';
-import { Settings } from '../types/graph';
+import { Settings, SubnetInfo } from '../types/graph';
 import './FormEditor.css';
-import {IPUtils} from '../utils/iputils'
+import Folder from './Folder';
+import toast from 'react-hot-toast';
+import { IPUtils } from '../utils/iputils';
 
 interface SettingEditorProps {
   settings: Settings;
@@ -38,11 +40,28 @@ export default function SettingsEditor({
 
   const [listenPort, setListenPort] = useState<number>(settings.listenPort);
   const [mtu, setmtu] = useState<number>(settings.mtu);
+  const [subnets, setSubnets] = useState<SubnetInfo[]>(settings.subnets);
+  const [subnetInput, setSubnetInput] = useState<string>("");
+
+  const handleAddSubnet = (cidrStr: string) => {
+    const result = IPUtils.parse(cidrStr);
+    const cidr = result.cidr;
+    if(!cidr) {
+      toast.error(`无效的CIDR格式: ${result.error}`);
+      return;
+    }
+    if(subnets.some(s => IPUtils.equal(s.subnet, cidr))) {
+      toast.error("该CIDR已存在");
+      return;
+    }
+    setSubnets([...subnets, {subnet: cidr, nodes: {}}]);
+  };
 
   const handleSave = (): void => {
     const updateData = {
       listenPort: listenPort,
       mtu: mtu,
+      subnets: subnets
     };
 
     const validation = Validate(updateData);
@@ -100,6 +119,49 @@ export default function SettingsEditor({
           />
         </div>
 
+        <div className="form-group">
+          <label>子网配置</label>
+          <div className="add-subnet">
+            <input 
+              type="text" 
+              className="subnet-input" 
+              placeholder="CIDR格式的子网，例如：192.168.1.0/24"
+              value={subnetInput}
+              onChange={e => setSubnetInput(e.target.value)}
+            />
+            <button className="btn-add" onClick={e => {
+              e.stopPropagation();
+              handleAddSubnet(subnetInput);
+            }}>+</button>
+          </div>
+
+          <div className="subnet-list">
+            <label>已添加的子网：</label>
+            {subnets.map((subnetInfo, idx) => (
+              <Folder key={idx} title={subnetInfo.subnet.toString()}>
+                <div className="add-node-to-subnet">
+                  <select>
+                    <option value="">请选择</option>
+                    <option value="apple">苹果</option>
+                    <option value="banana">香蕉</option>
+                    <option value="orange">橘子</option>
+                  </select>
+                  <input type="text" placeholder="输入节点ID" />
+                  <button>+</button>
+                </div>
+                
+                <ul className="subnet-nodes-list">
+                  <li>
+                    <span>节点ID: example-node-1, IP:</span>
+                    <button className="remove-node-btn">×</button>
+                  </li>
+                </ul>
+              </Folder>
+            ))}
+          </div>
+          
+        </div>
+
         <div className="editor-actions">
           <button className="btn-save" onClick={handleSave}>保存</button>
           <button className="btn-cancel" onClick={onClose}>取消</button>
diff --git a/src/types/graph.ts b/src/types/graph.ts
index 6ada0f5..fb4043c 100644
--- a/src/types/graph.ts
+++ b/src/types/graph.ts
@@ -1,5 +1,6 @@
 import { Node, Edge } from '@xyflow/react';
 import { createContext } from 'react';
+import { CIDR } from '../utils/iputils';
 
 export type AppNode = Node<NodeData>;
 
@@ -33,14 +34,22 @@ export type EdgeDataUpdate = {
   persistentKeepalive?: number;
 }
 
+export interface SubnetInfo {
+  subnet: CIDR;
+  nodes: Record<string, CIDR | undefined>;
+}
+
 export interface Settings {
   listenPort: number;
   mtu: number;
+
+  subnets: SubnetInfo[];
 }
 
 export const initialSettings : Settings = {
   listenPort: 38894,
   mtu: 1420,
+  subnets: []
 };
 
 export const SettingsContext = createContext<Settings>(initialSettings);
\ No newline at end of file
diff --git a/src/utils/iputils.ts b/src/utils/iputils.ts
index 370ee7b..e92438d 100644
--- a/src/utils/iputils.ts
+++ b/src/utils/iputils.ts
@@ -125,6 +125,10 @@ export class IPUtils {
     ];
   }
 
+  static equal(c1: CIDR, c2: CIDR): boolean {
+    return c1.version === c2.version && c1.binary === c2.binary && c1.mask === c2.mask;
+  }
+
   static parse(cidrStr: string): CIDRParseResult {
     const parts = cidrStr.split('/');
     if (parts.length !== 2) return { error: 'Invalid CIDR format' };