Under　the　condition　of　rainfall,　trees　and　shrubs’　leaves　can　reduce　the　slope　being　washed　and　anchoring　the　slope　by　their　roots,　which　had　a　positive　effect　on　the　slope　stability.　However,　in　typhoon　rainstorm　season,　typhoon　cracks　the　ground　through　swaying　vegetation,　strengthens　the　effect　of　rainfall　infiltration,　and　further　reduces　the　matrix　suction　and　cohesion　of　soil,　to　reduce　the　stability　of　slope.　In　order　to　explore　whether　trees　and　shrubs　have　a　positive　or　negative　effect　on　slope　during　typhoon　rainstorm　season,　this　paper　conducted　quantitative　analysis　through　indoor　model　experiment　and　numerical　simulation,　comparing　the　influence　of　no　typhoon,　typhoon　and　typhoon　with　different　intensity　on　slope　stability.　It　was　found　that　the　abrupt　change　time　of　pore　water　pressure　curve　and　water　content　curve　was　advanced　with　the　typhoon　developing　from　nothing　and　becoming　stronger　from　weak.　At　the　same　time,　the　effect　of　landslide　with　typhoon　coupled　rainstorm　compared　the　simple　rainfall,　the　area　and　volume　of　landslide　damage　were　larger,　and　the　stronger　the　typhoon　grade　was,　the　larger　the　area　and　volume　of　landslide　damage　were.Compared　the　stability　coefficient　of　simulated　slope　by　Geo-Studio　numerical　simulation　software　verifying,　the　initial　stability　coefficient　was　the　largest　and　the　decline　speed　was　the　slowest　under　the　effect　of　no　typhoon,　the　typhoon　was　bad　and　under　the　strong　typhoon　condition　was　the　worst.　©　2023　Editorial　Office　of　The　Chinese　Journal　of　Geological　Hazards　and　Control.　All　rights　reserved.