With　the　development　of　wisdom　forestry,　wireless　sensor　networks　play　an　increasingly　important　role.　With　its　powerful　ability　of　space-time　information　data　management,　spatial　analysis　and　visualization,　GIS　technology　will　provide　a　scientific　and　visual　geographic　information　support　platform　for　the　application　of　wireless　sensor　networks　in　forest　environment.　The　paper　makes　use　of　solar　radiation　analysis,　visibility　analysis,　and　buffer　analysis　of　GIS　to　help　engineers　scientifically　selecting　the　sensing　node　location,　and　finally　develops　a　3D　wireless　sensor　networks　visualization　system　based　on　WebGIS.　The　system　realizes　the　map　display　of　the　space-time　information,　which　is　beneficial　to　manage　sensor　nodes　efficiently.　©　2019　IEEE.