Edge　caching　and　computation　offloading　are　potential　technologies　that　can　greatly　reduce　the　pressure　on　the　backhaul　link　and　improve　user　response　speed.　However,　a　large　amount　of　data　exchange　and　resource　transactions　between　users　have　security　problems,　and　it　is　difficult　to　encourage　users　to　participate.　In　this　article,　we　propose　a　blockchain-based　consensus　protocol,　as　well　as　detailed　formula　steps　and　theoretical　analysis　in　a　mobile　edge　network　D2D　environment,　where　the　blockchain　acts　as　a　trusted　third　party　to　maintain　transactions　between　users.　In　order　to　improve　the　throughput　of　the　blockchain,　we　jointly　consider　the　trust　feature　of　the　blockchain　nodes　and　controllers　and　the　computing　resource　of　the　blockchain　system,　and　by　defining　the　state　space,　the　problem　is　transformed　into　a　Markov　decision　process.　However,　the　traditional　method　is　difficult　to　solve　the　joint　problem,　so　we　propose　a　method　based　on　hierarchical　reinforcement　learning.　The　simulation　result　shows　the　effectiveness　of　the　proposed　scheme.　©　2020　IEEE.