diff --git a/app.js b/app.js
index 852124a..bb7d4c4 100644
--- a/app.js
+++ b/app.js
@@ -56,6 +56,7 @@ const PROVINCE_BY_PLATE_PREFIX = {
 
 let map = null;
 let markerList = [];
+let infoWindowList = [];
 let is3DPitch = true;
 let currentMode = 'vehicle';
 let currentTheme = 'theme-white';
@@ -239,6 +240,7 @@ function stationNodes() {
 function renderAMapMarkers() {
   if (!map || !dashboard) return;
   markerList.forEach(marker => marker.remove()); markerList = [];
+  infoWindowList.forEach(infoWindow => infoWindow.close()); infoWindowList = [];
   const nodes = currentMode === 'vehicle' ? vehicleNodes() : stationNodes();
   const dict = i18n[currentLang];
   for (const node of nodes) {
@@ -253,6 +255,7 @@ function renderAMapMarkers() {
       content: `<div class="map-info-window"><strong>${escapeHTML(node.name)}</strong><div>${escapeHTML(node.detail || '')}</div>${isVehicleNode ? `<div>${dict.onlineText}: ${node.online}/${node.count} · ${formatNumber(node.dist, 1)} km</div>` : ''}</div>`,
       offset: new AMap.Pixel(0, -32)
     });
+    infoWindowList.push(infoWindow);
     marker.on('mouseover', () => infoWindow.open(map, node.lnglat));
     marker.on('mouseout', () => infoWindow.close());
     if (node.kind === 'vehicleProvince') marker.on('click', () => map.setZoomAndCenter(7.2, node.lnglat));