In the open electricity market environment, distributed generation has developed rapidly. Traditional centralized transactions face great challenges in meeting the transparency, timeliness and data security of distributed power transactions, in order to help park microgrid operators to achieve multi- energy complementarity and collaborative optimization, and help campus microgrids to be digitalized, economical and low-carbon operations. In this context, model analyzes the fit between blockchain technology and distributed electricity market, and constructs a distributed transaction framework model based on blockchain-based microgrid based on distributed power trading and blockchain. Secondly, the implementation mechanism of blockchain-based multi-distributed power transaction (including smart contract, consensus mechanism and cross- chain technology) is analyzed, and the risk challenges faced by different implementation mechanisms are proposed.