The　rapid　development　of　web　services　technology　ushers　Geographical　Information　Systems　(GISs)　into　the　era　of　geographic　information　web　services　(GIWS),　which　requires　a　scalable　and　extensible　GISs　model　to　deliver　distributed　geographic　information　and　GISs　functions　integrated　as　independently-provided,　interoperable　services　in　a　distributed　computing　environment.　Several　distributed　services　can　be　dynamically　chained　as　a　new　service　to　accomplish　a　specific　task.　Such　a　model　of　service　chaining　is　one　of　the　most　important　research　topics　of　next　generation　GISs.　The　paper　highlights　the　issues　of　service　chaining,　the　process　of　combining　several　distributed,　interoperable　GIWS　dynamically　to　construct　customized　applications,　and　analyses　characters　of　each　pattern.　Then,　based　on　pattern　of　client-coordinated　chaining,　we　design　a　service　chaining　which　is　developed　in　a　J2EE　development　environment　using　web　services　technology,　and　construct　a　web　services-oriented　Geo-spatial　data　integration　and　visualization　platform　in　order　to　integrate　multi-sources　and　heterogeneous　Geo-spatial　data　using　Geography　Markup　Language　(GML)　and　Geo-spatial　data　integration　technology,　and　to　visualize　geographic　information　using　Scalable　Vector　Graphics　(SVG)　and　JavaScript　technology.　During　the　process　of　design,　several　GIWS　are　defined,　and　functions,　interfaces　and　related　methods　of　these　services　are　discussed　in　detail.　The　paper　focuses　on　the　method　for　chaining　distributed　GIWS,　the　mechanism　for　geographic　information　dissemination　and　error　handling.　Finally,　forest　Geo-spatial　Data　which　have　two　typical　types　of　data　E00　and　Shapefile　(SHP)　was　used　to　test　the　platform.　The　result　indicates　that　using　service　chaining　for　multi-sources　and　heterogeneous　Geo-spatial　data　integration　and　visualization　can　efficiently　meet　customized　needs,　but　further　research　is　needed　for　better　application.