The　inquiry　of　vector　data　and　transmission　of　massive　data　between　the　client　and　the　server　end　has　become　the　critical　key　of　the　problem　because　of　the　contradiction　between　Distributed　WebGIS　massive　data　and　the　limited　bandwidth　of　network　resources.　Based　on　analysis　of　the　two　frameworks　of　WebGIS　and　the　properties　of　intelligent　Agent　in　the　field　of　Distributed　WebGIS,　this　paper　attempts　to　present　a　hybrid　model　WebGIS　framework.　The　performance　of　this　hybrid　model　has　been　verified　though　the　experiment　for　cable　monitoring　system　conducted　in　State　Grid　in　Beijing.　It　has　been　proved　that　this　framework　is　effective　on　improving　the　inquiry　speed　and　maintaining　a　good　network-load　performance.　©　2009　IEEE.