In　order　to　satisfy　the　requirements　of　remote　acquisition,　remote　query　and　collaborative　remote　editing,　modification　and　analysis　for　multi-user　on　distributed　spatial　data,　a　Collaborative　Geographical　Information　System　(CoGIS)　was　developed.　CoGIS　has　provided　solutions　to　important　problems　including:　conflicts　of　simultaneous　editing　spatial　data　among　distributed　users,　collaboration　and　group　perception　of　data　manipulation　among　users,　and　heterogeneous　problem　of　data　or　messages　transfer　across　different　platforms.　To　effectively　deal　with　collaboration,　a　systematic　structure　of　CoGIS　based　on　multi-Agent　was　brought　forward.　Design　and　realization　of　communication　mechanism　and　concurrency　control　mechanism　of　CoGIS　were　provided,　and　the　communication　interfaces　of　delivery　layer　and　representation　layer　were　designed.　A　prototype　of　CoGIS　was　developed　and　was　used　in　planning　and　design　application　system.