diff --git a/src/components/map/ThreeMap.vue b/src/components/map/ThreeMap.vue
index d0b98ed..b05f21b 100644
--- a/src/components/map/ThreeMap.vue
+++ b/src/components/map/ThreeMap.vue
@@ -2248,6 +2248,19 @@ const zoomCamera = (direction: 'in' | 'out', options: { source?: ZoomCameraSourc
 
   const shouldTrackUserZoom = options.source === 'button'
 
+  if (shouldTrackUserZoom && direction === 'in' && activeView.value === 'overview') {
+    const now = Date.now()
+    if (!isOverviewEntryIntentActive(now)) {
+      overviewEntryIntentStartedAt = now
+      overviewEntryStartDistance = currentDistance
+      overviewEntryZoomInRounds = 0
+    }
+    overviewEntryIntentStartedAt = now
+    overviewEntryZoomInRounds += 1
+    overviewWheelZoomInRounds += 1
+    overviewWheelZoomIntentUntil = now + 900
+  }
+
   offset.setLength(nextDistance)
   const nextPosition = controls.target.clone().add(offset)
   moveCameraTo(nextPosition, controls.target, {
@@ -2255,11 +2268,39 @@ const zoomCamera = (direction: 'in' | 'out', options: { source?: ZoomCameraSourc
   })
   if (shouldTrackUserZoom) {
     lastControlDistance = currentDistance
+    checkAutoSwitch({
+      forceOverviewEntry: direction === 'in' && activeView.value === 'overview'
+    })
   }
 
   handleControlChange()
 }
 
+const loadCurrentFloorPoiMarkers = async (loadToken: number) => {
+  if (!shouldRenderPoiMarkers.value) return
+
+  const floor = floorIndex.value.find((item) => item.floorId === currentFloor.value) || floorIndex.value[0]
+  if (!floor) return
+
+  await loadFloorPOIs(floor, loadToken)
+  assertCurrentModelLoad(loadToken)
+}
+
+const loadCurrentFloorPoiMarkersInBackground = (loadToken: number) => {
+  if (!shouldRenderPoiMarkers.value) return
+
+  void loadCurrentFloorPoiMarkers(loadToken)
+    .then(() => {
+      if (!isCurrentModelLoad(loadToken)) return
+      refreshPoiVisibilityByDistance()
+      renderRoutePreview()
+    })
+    .catch((error) => {
+      if (isStaleModelLoadError(error)) return
+      console.warn('馆内外观点位标记后台加载失败:', error)
+    })
+}
+
 const loadOverview = async () => {
   const packageData = renderPackage.value
   if (!packageData || !scene) return
@@ -2278,6 +2319,7 @@ const loadOverview = async () => {
     cacheAutoSwitchOverviewMaxDim(activeModel)
     targetScene.add(activeModel)
     fitCameraToObject(activeModel)
+    loadCurrentFloorPoiMarkersInBackground(loadToken)
     resetAutoSwitchDistanceTracking()
     refreshPoiVisibilityByDistance()
     renderRoutePreview()
@@ -2304,6 +2346,7 @@ const loadOverview = async () => {
   cachedSharedModelUrl = packageData.overviewModelUrl
   targetScene.add(activeModel)
   fitCameraToObject(activeModel)
+  loadCurrentFloorPoiMarkersInBackground(loadToken)
   resetAutoSwitchDistanceTracking()
   refreshPoiVisibilityByDistance()
   renderRoutePreview()