With　the　continuous　development　of　geographic　information　system　technology,　the　ability　to　analyze　and　process　various　spatial　information　has　been　greatly　enriched　and　strengthened.　The　optimal　path　analysis　is　the　current　research　hotspot　in　spatial　analysis.　In　this　paper,　Changsha　City　in　Hunan　Province　was　taken　as　an　example　to　build　an　optimal　path　selection　platform　based　on　WebGIS.　With　the　help　of　ArcGIS　network　analysis　tool,　network　analysis　data　set　was　established　for　vector　road　data,　and　road　length　was　selected　as　impedance　factor　to　realize　optimal　path　search.　©　Published　under　licence　by　IOP　Publishing　Ltd.