This　paper　aims　at　a　series　of　optimisable　problems　existing　in　the　traditional　traffic　data　resource　sharing　mode,　such　as　data　privacy　protection,　data　traceability,　business　collaboration,　inter-Agency　trust　and　traffic　data　sovereignty.　After　an　in-depth　analysis　of　the　critical　factors　in　the　process　of　traffic　data　resource　sharing,　combined　with　the　blockchain　technology　with　the　characteristics　of　chain　structure,　P2P　network,　distributed,　intelligent　contract　execution　script,　etc.,　the　traffic　data　resource　sharing　blockchain　model　was　built,　which　abandoned　the　centralised　and　unified　data　centre,　and　got　the　advantages　of　transaction　traceability　and　data　tamper-proof.　This　paper　first　introduces　the　shortcomings　of　the　traditional　traffic　data　resource　sharing　mode　and　the　characteristics　of　blockchain　technology.　Then　we　design　a　traffic　data　resource　sharing　model　based　on　blockchain　technology.　We　introduce　the　model　framework　from　four　aspects:　system　description,　model　architecture,　system　flow　and　storage　management.　Through　a　thorough　analysis　of　the　demand　for　traffic　data　resource　sharing,　the　traffic　blockchain　is　created　to　verify　and　store　traffic　data,　ensuring　the　integrity　of　traffic　data　to　some　extent.　Next,　the　distributed　node　consensus　algorithm　is　used　to　generate　and　update　the　data.　Then,　the　DPOS　+DNBFT　hybrid　consensus　is　designed　by　combining　ECDSA　digital　signature　algorithm　to　ensure　the　authenticity　and　reliability　of　traffic　data.　Finally,　to　realise　the　application　of　the　traffic　data　resource　sharing　blockchain　model　in　real　life,　we　designed　the　system　management　contracts.　©　2021　Association　for　Computing　Machinery.　All　rights　reserved.