diff --git a/src/components/map/ThreeMap.vue b/src/components/map/ThreeMap.vue
index d8e4cfa..6a31520 100644
--- a/src/components/map/ThreeMap.vue
+++ b/src/components/map/ThreeMap.vue
@@ -833,6 +833,7 @@ const emitFloorChange = (floorId: string, sceneRevision = props.sceneRevision) =
 }
 const currentFloor = ref(props.initialFloorId)
 const selectedPOI = ref<RenderPoi | null>(null)
+let routeStartSelectionGeneration = 0
 const activeFocusPoiId = ref('')
 const floorIndex = ref<FloorIndexItem[]>([])
 const renderPackage = ref<GuideModelRenderPackage | null>(null)
@@ -8157,6 +8158,14 @@ const selectRouteStartCandidateNear = (
 const handleSceneTap = async (event: PointerEvent) => {
   if (!camera || !renderer || !getContainerElement()) return
 
+  const routeStartSelectionActiveAtTap = props.routeStartSelectionActive
+  const routeStartSelectionGenerationAtTap = routeStartSelectionGeneration
+  const canResolveRouteStartForTap = () => (
+    routeStartSelectionActiveAtTap
+    && props.routeStartSelectionActive
+    && routeStartSelectionGeneration === routeStartSelectionGenerationAtTap
+  )
+
   const rect = renderer.domElement.getBoundingClientRect()
   const pointer = new THREE.Vector2(
     ((event.clientX - rect.left) / rect.width) * 2 - 1,
@@ -8215,7 +8224,8 @@ const handleSceneTap = async (event: PointerEvent) => {
       }
 
       const poi = findLoadedPoi(selectedPoi.id) || selectedPoi
-      if (props.routeStartSelectionActive) {
+      if (routeStartSelectionActiveAtTap) {
+        if (!canResolveRouteStartForTap()) return
         if (poi.positionGltf) {
           selectRouteStartCandidateNear(
             poi.floorId,
@@ -8248,7 +8258,8 @@ const handleSceneTap = async (event: PointerEvent) => {
     : []
   const matchedModelPoi = findPoiForModelHits(modelHits)
 
-  if (props.routeStartSelectionActive) {
+  if (routeStartSelectionActiveAtTap) {
+    if (!canResolveRouteStartForTap()) return
     if (matchedModelPoi?.poi.positionGltf) {
       selectRouteStartCandidateNear(
         matchedModelPoi.poi.floorId,
@@ -9426,11 +9437,13 @@ watch(() => props.visiblePoiIds, () => {
 })
 
 watch(() => props.routeStartSelectionActive, (isSelectingStart) => {
+  routeStartSelectionGeneration += 1
   if (isSelectingStart) {
     clearMapSelection(false)
   }
 }, {
-  immediate: true
+  immediate: true,
+  flush: 'sync'
 })
 
 watch(() => [props.routePreview, props.showRoute, props.routeNavigationActive], () => {
diff --git a/src/components/navigation/RoutePlannerPanel.vue b/src/components/navigation/RoutePlannerPanel.vue
index 6efddb2..c39524f 100644
--- a/src/components/navigation/RoutePlannerPanel.vue
+++ b/src/components/navigation/RoutePlannerPanel.vue
@@ -38,15 +38,15 @@
       </view>
     </view>
 
-    <view v-if="startCandidate" class="route-confirm-mask" @tap.stop="emit('cancelStart')">
+    <view v-if="startCandidate" class="route-confirm-mask" @tap.stop="handleCancelStart">
       <view class="route-confirm-card" @tap.stop>
         <text class="route-confirm-title">确认选择</text>
         <text class="route-confirm-message">{{ normalizeVisitorPoiDisplayName(startCandidate.name) }} 为起点吗？</text>
         <view class="route-confirm-actions">
-          <view class="route-confirm-action secondary" @tap="emit('cancelStart')">
+          <view class="route-confirm-action secondary" @tap.stop="handleCancelStart">
             <text class="route-confirm-action-text">取消</text>
           </view>
-          <view class="route-confirm-action primary" @tap="emit('confirmStart', startCandidate)">
+          <view class="route-confirm-action primary" @tap.stop="handleConfirmStart">
             <text class="route-confirm-action-text">确定</text>
           </view>
         </view>
@@ -56,7 +56,7 @@
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue'
+import { computed, onBeforeUnmount, ref, watch } from 'vue'
 import type { RoutePointOption } from '@/components/navigation/RoutePointPicker.vue'
 import { normalizeVisitorPoiDisplayName } from '@/view-models/visitorPoiPresentation'
 
@@ -87,6 +87,42 @@ const emit = defineEmits<{
   back: []
 }>()
 
+const confirmationInteractive = ref(false)
+let confirmationInteractiveTimer: ReturnType<typeof window.setTimeout> | null = null
+const confirmationInteractionGuardMs = 350
+
+const clearConfirmationInteractiveTimer = () => {
+  if (confirmationInteractiveTimer === null) return
+  window.clearTimeout(confirmationInteractiveTimer)
+  confirmationInteractiveTimer = null
+}
+
+watch(() => props.startCandidate, (candidate) => {
+  clearConfirmationInteractiveTimer()
+  confirmationInteractive.value = false
+  if (!candidate) return
+
+  confirmationInteractiveTimer = window.setTimeout(() => {
+    confirmationInteractiveTimer = null
+    confirmationInteractive.value = Boolean(props.startCandidate)
+  }, confirmationInteractionGuardMs)
+}, {
+  immediate: true,
+  flush: 'sync'
+})
+
+onBeforeUnmount(clearConfirmationInteractiveTimer)
+
+const handleCancelStart = () => {
+  if (!confirmationInteractive.value) return
+  emit('cancelStart')
+}
+
+const handleConfirmStart = () => {
+  if (!confirmationInteractive.value || !props.startCandidate) return
+  emit('confirmStart', props.startCandidate)
+}
+
 const pointMeta = (point: RoutePointOption) => (
   point.categoryLabel ? `${point.floorLabel} · ${point.categoryLabel}` : point.floorLabel
 )
diff --git a/tests/unit/RoutePlannerPanel.spec.ts b/tests/unit/RoutePlannerPanel.spec.ts
index a5ceb4c..e96a145 100644
--- a/tests/unit/RoutePlannerPanel.spec.ts
+++ b/tests/unit/RoutePlannerPanel.spec.ts
@@ -13,6 +13,23 @@ const point = (name: string, floorLabel: string) => ({
 })
 
 describe('RoutePlannerPanel', () => {
+  it('忽略打开确认层的同一次点击，再响应后续确认或取消操作', async () => {
+    const wrapper = mount(RoutePlannerPanel, {
+      props: {
+        startCandidate: point('服务台', '1F')
+      }
+    })
+
+    await wrapper.get('.route-confirm-mask').trigger('tap')
+    await wrapper.get('.route-confirm-action.primary').trigger('tap')
+    expect(wrapper.emitted('cancelStart')).toBeUndefined()
+    expect(wrapper.emitted('confirmStart')).toBeUndefined()
+
+    await new Promise<void>((resolve) => window.setTimeout(resolve, 350))
+    await wrapper.get('.route-confirm-action.primary').trigger('tap')
+    expect(wrapper.emitted('confirmStart')).toEqual([[expect.objectContaining({ poiId: '服务台' })]])
+  })
+
   it('在导航副标题中显示起点和终点楼层', () => {
     const wrapper = mount(RoutePlannerPanel, {
       props: {