diff --git a/src/components/SimpleProcessDesignerV2/src/NodeHandler.vue b/src/components/SimpleProcessDesignerV2/src/NodeHandler.vue
index ab5b62714213bb36453a1bbccbc1ed75bb664b43..07e94590891ac49452eb7362cc9a9d8038743847 100644
--- a/src/components/SimpleProcessDesignerV2/src/NodeHandler.vue
+++ b/src/components/SimpleProcessDesignerV2/src/NodeHandler.vue
@@ -85,6 +85,7 @@ import {
   DEFAULT_CONDITION_GROUP_VALUE
 } from './consts'
 import { generateUUID } from '@/utils'
+import { isNodeInParallelBranch } from './utils'
 
 defineOptions({
   name: 'NodeHandler'
@@ -107,7 +108,24 @@ const emits = defineEmits(['update:childNode'])
 
 const readonly = inject<Boolean>('readonly') // 是否只读
 
-const addNode = (type: number) => {
+// 注入根节点
+const rootNode = inject<Ref<SimpleFlowNode>>('rootNode')
+
+const addNode = async (type: number) => {
+  // 验证条件分支
+  if (type === NodeType.CONDITION_BRANCH_NODE) {
+    if (!rootNode?.value) {
+      console.warn('No root node found')
+      return
+    }
+
+    // 检查是否在并行分支内
+    if (isNodeInParallelBranch(props.currentNode, rootNode.value)) {
+      message.error('并行网关中不能执行条件分支，请转换为包容网关')
+      return
+    }
+  }
+
   // 校验：条件分支、包容分支后面，不允许直接添加并行分支
   if (
     type === NodeType.PARALLEL_BRANCH_NODE &&
diff --git a/src/components/SimpleProcessDesignerV2/src/SimpleProcessModel.vue b/src/components/SimpleProcessDesignerV2/src/SimpleProcessModel.vue
index a8a0ac61e498d30f64e2e420413bb36094745105..aef75a29c5115254945aae6d6c659a759589f5fe 100644
--- a/src/components/SimpleProcessDesignerV2/src/SimpleProcessModel.vue
+++ b/src/components/SimpleProcessDesignerV2/src/SimpleProcessModel.vue
@@ -86,6 +86,9 @@ const processNodeTree = useWatchNode(props)
 
 provide('readonly', props.readonly)
 
+// 提供根节点给所有子组件
+provide('rootNode', processNodeTree)
+
 // TODO 可优化：拖拽有点卡顿
 /** 拖拽、放大缩小等操作 */
 let scaleValue = ref(100)
diff --git a/src/components/SimpleProcessDesignerV2/src/utils.ts b/src/components/SimpleProcessDesignerV2/src/utils.ts
index 8e715b44f7873fc2d3374abc8ca1d1776601be6c..db0efe9b5142429ad4b2e00b8cdac76abb5201ac 100644
--- a/src/components/SimpleProcessDesignerV2/src/utils.ts
+++ b/src/components/SimpleProcessDesignerV2/src/utils.ts
@@ -1,4 +1,5 @@
 import { TimeUnitType, ApproveType, APPROVE_TYPE } from './consts'
+import { SimpleFlowNode, NodeType } from './consts'
 
 // 获取条件节点默认的名称
 export const getDefaultConditionNodeName = (index: number, defaultFlow: boolean | undefined): string => {
@@ -39,3 +40,95 @@ export const getApproveTypeText = (approveType: ApproveType): string => {
   })
   return approveTypeText
 }
+
+/**
+ * 检查节点是否在并行分支内
+ * @param currentNode 当前节点
+ * @param rootNode 流程根节点
+ * @returns boolean
+ */
+export function isNodeInParallelBranch(
+  currentNode: SimpleFlowNode,
+  rootNode: SimpleFlowNode
+): boolean {
+  const path = findNodePath(currentNode, rootNode)
+  
+  // 检查当前节点是否在并行分支的条件节点内
+  for (let i = 0; i < path.length; i++) {
+    const node = path[i]
+    if (node.type === NodeType.PARALLEL_BRANCH_NODE) {
+      // 如果找到并行分支节点，检查当前节点是否在其条件节点内
+      if (node.conditionNodes?.some(conditionNode => {
+        // 检查当前节点是否在这个条件分支的子树中
+        const subPath = findNodePath(currentNode, conditionNode)
+        if (subPath.length > 0) {
+          // 如果在条件分支内，检查是否在包容节点内
+          // 从当前节点向上查找最近的包容节点
+          for (const pathNode of subPath) {
+            if (pathNode.type === NodeType.INCLUSIVE_BRANCH_NODE) {
+              // 如果在包容节点内，允许创建条件分支
+              return false
+            }
+          }
+          return true
+        }
+        return false
+      })) {
+        return true
+      }
+    }
+  }
+
+  // 不在任何并行分支的条件节点内
+  return false
+}
+
+/**
+ * 查找从根节点到目标节点的路径
+ * @param targetNode 目标节点
+ * @param currentNode 当前节点（通常是根节点）
+ * @param path 路径数组
+ * @returns SimpleFlowNode[]
+ */
+export function findNodePath(
+  targetNode: SimpleFlowNode,
+  currentNode: SimpleFlowNode,
+  path: SimpleFlowNode[] = []
+): SimpleFlowNode[] {
+  // 如果找到目标节点，返回路径
+  if (currentNode === targetNode) {
+    return [...path, currentNode]
+  }
+
+  // 检查条件分支节点
+  if (currentNode.conditionNodes) {
+    for (const conditionNode of currentNode.conditionNodes) {
+      // 在当前分支中搜索
+      const newPath = [...path, currentNode]
+      
+      // 检查条件节点本身
+      if (conditionNode === targetNode) {
+        return [...newPath, conditionNode]
+      }
+
+      // 检查条件节点的子节点
+      if (conditionNode.childNode) {
+        const result = findNodePath(targetNode, conditionNode.childNode, newPath)
+        if (result.length > 0) {
+          return result
+        }
+      }
+    }
+  }
+
+  // 检查子节点
+  if (currentNode.childNode) {
+    const newPath = [...path, currentNode]
+    const result = findNodePath(targetNode, currentNode.childNode, newPath)
+    if (result.length > 0) {
+      return result
+    }
+  }
+
+  return []
+}