With　the　development　of　communication　network　and　technology,　Internet　of　Vehicles　(IoV)　is　gradually　widely　used　in　the　transportation　network,　and　subsequent　problems　are　also　increasing.　Nowadays,　most　of　the　Internet　of　Vehicles　systems　use　centralized　trusted　units　for　information　storage,　processing　and　transmission,　which　will　lead　to　many　security　risks,　such　as　message　leakage,　high　cost　and　high　latency　of　the　central　unit.　Therefore,　ensuring　the　communication　security　in　the　network　is　the　key　in　the　field　of　IoV.　By　introducing　the　concept　of　blockchain　in　the　scene,　the　decentralized　system　based　on　the　IoV　becomes　possible.　Blockchain　technology　is　considered　as　the　key　technology　for　efficiently　and　securely　storing,　processing　and　sharing　data.　To　overcome　the　limitations　of　existing　works,　we　propose　a　vehicle-based　blockchain　security　consensus　authentication　algorithm.　Compared　with　the　existing　technologies,　our　method　is　better　in　authentication　processing　delay,　and　key　analysis　time.　©　2022　ACM.