diff --git a/web3/packages/mind-map/package.json b/web3/packages/mind-map/package.json
index 32ff4b85..07b8e5f9 100644
--- a/web3/packages/mind-map/package.json
+++ b/web3/packages/mind-map/package.json
@@ -18,7 +18,8 @@
     "simple-mind-map-plugin-themes": "^1.0.0",
     "@toast-ui/editor": "^3.1.5",
     "axios": "^1.7.9",
-    "codemirror": "^5.65.16"
+    "codemirror": "^5.65.16",
+    "uuid": "^11.1.0"
   },
   "main": "src/index.ts",
   "module": "src/index.ts",
diff --git a/web3/packages/mind-map/src/components/ToolBar.vue b/web3/packages/mind-map/src/components/ToolBar.vue
index 40cc9e88..37610951 100644
--- a/web3/packages/mind-map/src/components/ToolBar.vue
+++ b/web3/packages/mind-map/src/components/ToolBar.vue
@@ -1,6 +1,7 @@
 <template>
     <div class="absolute w-full border flex flex-row gap-[24px]">
       <InsertChildNode/>
+      <InsertSiblingNode/>
       <ImportBtn/>
       <ExportBtn/>
     </div>
@@ -10,4 +11,5 @@
 import InsertChildNode from "./ToolBar/InsertChildNode.vue";
 import ImportBtn from "./ToolBar/ImportBtn.vue";
 import ExportBtn from "./ToolBar/ExportBtn.vue";
+import InsertSiblingNode from "./ToolBar/InsertSiblingNode.vue";
 </script>
\ No newline at end of file
diff --git a/web3/packages/mind-map/src/components/ToolBar/InsertChildNode.vue b/web3/packages/mind-map/src/components/ToolBar/InsertChildNode.vue
index 635cd28d..93065ba4 100644
--- a/web3/packages/mind-map/src/components/ToolBar/InsertChildNode.vue
+++ b/web3/packages/mind-map/src/components/ToolBar/InsertChildNode.vue
@@ -10,6 +10,7 @@
 
 <script lang="ts" setup>
 import { useMindMapStore } from "../../store/index";
+import { v4 as uuidv4 } from "uuid";
 
 const { insertChildNode } = useMindMapStore();
 
@@ -17,7 +18,7 @@ async function addNewChildNode() {
   insertChildNode(
     async () => {
       return {
-        uid: "newChildNode",
+        uid: uuidv4(),
         text: "新节点22222",
       };
     }
diff --git a/web3/packages/mind-map/src/components/ToolBar/InsertSiblingNode.vue b/web3/packages/mind-map/src/components/ToolBar/InsertSiblingNode.vue
new file mode 100644
index 00000000..0eebfe73
--- /dev/null
+++ b/web3/packages/mind-map/src/components/ToolBar/InsertSiblingNode.vue
@@ -0,0 +1,28 @@
+<!-- 插入姐妹节点 -->
+<template>
+    <div
+      @click="addNewSiblingNode"
+      class="w-[80px] h-[80px] flex justify-center items-center border"
+    >
+    姐妹节点
+    </div>
+  </template>
+  
+  <script lang="ts" setup>
+  import { useMindMapStore } from "../../store/index";
+  import { v4 as uuidv4 } from "uuid";
+  
+  const { insertSiblingNode } = useMindMapStore();
+  
+  async function addNewSiblingNode() {
+    insertSiblingNode(
+      async () => {
+        return {
+          uid: uuidv4(),
+          text: "新节点22222",
+        };
+      }
+    );
+  }
+  </script>
+  
\ No newline at end of file
diff --git a/web3/packages/mind-map/src/store/helpers/insertChildNode.ts b/web3/packages/mind-map/src/store/helpers/insertChildNode.ts
index a91b85c4..fa34083c 100644
--- a/web3/packages/mind-map/src/store/helpers/insertChildNode.ts
+++ b/web3/packages/mind-map/src/store/helpers/insertChildNode.ts
@@ -1,4 +1,5 @@
 import { useMindMapStore } from "../../store/index";
+import { v4 as uuidv4 } from "uuid";
 
 /**
  * 追加子节点
@@ -8,7 +9,7 @@ import { useMindMapStore } from "../../store/index";
  */
 export async function insertChildNode(
   beforeInsertCallback: () => Promise<({ uid: number | string, text: string } | boolean)>,
-  nodeOptions: Record<string, any> = { uid: 313123123, text: "新节点" }
+  nodeOptions: Record<string, any> = { uid: uuidv4(), text: " - " }
 ) {
   const { getMindMapInstance } = useMindMapStore();
 
diff --git a/web3/packages/mind-map/src/store/helpers/insertSiblingNode.ts b/web3/packages/mind-map/src/store/helpers/insertSiblingNode.ts
new file mode 100644
index 00000000..f7f5b916
--- /dev/null
+++ b/web3/packages/mind-map/src/store/helpers/insertSiblingNode.ts
@@ -0,0 +1,38 @@
+import { useMindMapStore } from "../../store/index";
+import { v4 as uuidv4 } from "uuid";
+
+// 插入同级节点
+/**
+ * 插入同级节点
+ * @param beforeInsertCallback 插入前执行的异步回调函数，如果返回节点信息则会合并到节点选项中
+ * @param nodeOptions 节点选项，可自定义节点属性
+ * @returns 返回Promise，可用于链式调用
+ */
+export async function insertSiblingNode(
+  beforeInsertCallback: () => Promise<({ uid: number | string, text: string } | boolean)>,
+  nodeOptions: Record<string, any> = { uid: uuidv4(), text: " - " }
+) {
+  const { getMindMapInstance } = useMindMapStore();
+
+  const _nodeOptions = {
+    ...nodeOptions,
+  }
+  
+  try {
+    // 如果提供了回调函数，先执行回调
+    const result = await beforeInsertCallback();
+
+    if (!result) return; // 如果直接 false 则不再执行插入操作
+
+    if (result) {
+        Object.assign(_nodeOptions, result);
+    }
+    
+    // 执行插入同级节点命令
+    return getMindMapInstance()?.execCommand("INSERT_NODE", false, [], _nodeOptions);
+  } catch (error) {
+    console.error("插入同级节点失败:", error);
+    throw error;
+  }
+}
+
diff --git a/web3/packages/mind-map/src/store/modules/mindMap.ts b/web3/packages/mind-map/src/store/modules/mindMap.ts
index 6c981de7..65f4c980 100644
--- a/web3/packages/mind-map/src/store/modules/mindMap.ts
+++ b/web3/packages/mind-map/src/store/modules/mindMap.ts
@@ -4,6 +4,7 @@ import { importFile } from "../helpers/import";
 import { exportFile } from "../helpers/export";
 import { usePlugins } from "../helpers/usePlugin";
 import { insertChildNode } from "../helpers/insertChildNode";
+import { insertSiblingNode } from "../helpers/insertSiblingNode";
 
 import MindMap from "simple-mind-map";
 
@@ -47,6 +48,7 @@ export const useMindMapStore = defineStore(
       importFile,
       exportFile,
       insertChildNode,
+      insertSiblingNode,
 
       // func
       initMindMap,
diff --git a/web3/pnpm-lock.yaml b/web3/pnpm-lock.yaml
index 6bb2dcf4..51bcd18e 100644
--- a/web3/pnpm-lock.yaml
+++ b/web3/pnpm-lock.yaml
@@ -100,6 +100,9 @@ importers:
       simple-mind-map-plugin-themes:
         specifier: ^1.0.0
         version: 1.0.1
+      uuid:
+        specifier: ^11.1.0
+        version: 11.1.0
       vue:
         specifier: ^3.3.4
         version: 3.5.13(typescript@5.8.3)
@@ -1884,6 +1887,10 @@ packages:
   util-deprecate@1.0.2:
     resolution: {integrity: sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==}
 
+  uuid@11.1.0:
+    resolution: {integrity: sha512-0/A9rDy9P7cJ+8w1c9WD9V//9Wj15Ce2MPz8Ri6032usz+NfePxx5AcN3bN+r6ZL6jEo066/yNYB3tn4pQEx+A==}
+    hasBin: true
+
   v8-compile-cache-lib@3.0.1:
     resolution: {integrity: sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==}
 
@@ -3738,6 +3745,8 @@ snapshots:
 
   util-deprecate@1.0.2: {}
 
+  uuid@11.1.0: {}
+
   v8-compile-cache-lib@3.0.1: {}
 
   vite@4.5.13(@types/node@22.15.3)(sass@1.87.0):