Due　to　the　prominent　advantages　of　decentralization,　transparency,　security,　and　traceability,　blockchain　technologies　have　attracted　ever-increasing　attention　from　academia　and　industry,　which　can　be　applied　to　establish　secure　and　reliable　resource　sharing　platforms　for　future　networks　and　applications.　Especially,　with　the　promising　6G　technology　which　has　large　bandwidth　and　space-air-ground　integrated　coverage,　blockchains　have　been　evolved　into　6G-enabled　blockchain　and　envisioned　to　build　various　decentralized　data　and　resource　management　systems.　However,　for　6G-enabled　wireless　blockchain　networks,　there　still　exist　many　challenges　for　their　development　and　prosperity,　e.g.,　large　block　propagation　delay　and　propagation　incentive.　Therefore,　this　paper　focuses　on　addressing　the　block　propagation　challenges.　Firstly,　inspired　by　epidemic　models,　we　classify　consensus　nodes　into　five　different　states　and　establish　a　block　propagation　model　for　public　blockchains　that　depicts　block　propagation　laws.　Then,　considering　consensus　nodes　are　limited　rational,　we　propose　an　Incentive　Mechanism　based　on　evolutionary　game　for　Block　Propagation　(marked　as　BPIM)　to　minimize　the　block　propagation　delay.　Numerical　results　demonstrate　that　compared　with　traditional　routing　algorithms,　BPIM　has　better　block　propagation　efficiency　and　greater　incentive　strength.