Wang,　H.　and　Zhao,　J.,　2020.　The　research　in　digital　slope　information　technology:　Evidences　from　coastal　region　of　China.　In:　Yang,　Y.;　Mi,　C.;　Zhao,　L.,　and　Lam,　S.　(eds.),　Global　Topics　and　New　Trends　in　Coastal　Research:　Port,　Coastal　and　Ocean　Engineering.　Journal　of　Coastal　Research,　Special　Issue　No.　103,　pp.　798-801.　Coconut　Creek　(Florida),　ISSN　0749-0208.　The　continuous　development　of　Internet　and　big　database　accelerate　the　data　infiltration　of　constructions　in　various　aspects.　Three-dimensional　Slope　Information　System　which　is　based　on　web　has　auxiliary　decisive　significance　on　both　planning　slope　engineering　and　constructions.　Based　on　the　two　modules　which　are　three-dimensional　visualization　and　image　processing　in　digital　video　surveillance,　a　slope　information　system　is　developed.　The　main　conclusions　are　shown　as　follows:　Based　on　UAV　photogrammetry　technology　and　the　application　of　both　BIM　and　GIS,　three-dimensional　visualization　and　its　application　can　be　realized　economically.　Based　on　advanced　development　of　PFC3D,　digital　elevation　model　MySQL　database　and　BP　neural　network,　the　rapid　modeling　and　analysis　of　complex　slope＇s　numerical　simulation　are　realized.　Based　on　video　image　processing　technology,　the　interaction　between　landslide　movement　and　three-dimensional　visualization　are　realized.　©　Coastal　Education　and　Research　Foundation,　Inc.　2020.