The　fast　moving　of　nodes　will　cause　the　frequent　change　of　network　topology　which　makes　the　data　dissemination　of　VANET　(Vehicular　Ad-hoc　Networks)　challenging.　This　paper　proposes　a　data　dissemination　strategy　which　is　called　the　Adaptive　Connectivity　Data　Dissemination　Scheme　(ACDDS),　that　is,　the　nodes　calculate　the　network　connectivity　in　current　areas　by　the　distributed　nodes　density　perception　algorithm,　then　hop　limit　function　is　established　on　the　basis　of　the　Euclidean　distance　and　nodes　density　between　the　nodes　and　hotspot,　meanwhile,　the　hop　count　of　the　message　transmitted　will　be　limited　dynamically　in　order　to　reduce　the　duplication　of　message　copies　in　the　hotspot　areas,　according　to　which,　the　number　of　redundant　massages　copies　will　be　reduced　effectively.　The　result　of　simulation　experiment　shows　that　the　delivery　ratio　and　delay　of　proposed　scheme　are　close　to　the　epidemic　routing　protocol,　but　the　number　of　message　copies　can　be　reduced　by　37.5%,　which　effectively　compromise　the　relationships　of　the　three.　©　2011　IEEE.