The　influence　of　the　side　wind　speed　on　the　heat　release　rate　of　enclosure　fire　in　high-rise　buildings　was　studied　by　small-scale　burning　test　in　this　paper.　The　results　showed　that　the　side　wind　could　affect　the　HRR　of　enclosure　fire.　HRR　of　enclosure　fire　would　increase　with　the　side　wind　speed　increasing.　This　should　be　considered　carefully　for　the　fire　safety　design　in　high-rise　buildings,　ambient　wind　effect　on　enclosure　fire　and　the　window　plume　should　not　be　ignore.　©　2019　IEEE.