Abstract: Nowadays, distributed power transaction presents problems such as centralized network risk verification and too little market competition. The characteristics of decentralization, tamper-proof and distributed storage of blockchain technology are highly compatible with the problems existing in distributed power transaction, and the application of blockchain technology in distributed power transaction has attracted wide attention. This paper will sort out the algorithms related to blockchain from three aspects: security protection algorithm, data synchronization algorithm and consensus algorithm, analyze them in combination with some applicable scenarios of distributed power transaction, and summarize the advantages and disadvantages of the existing core algorithms of blockchain in distributed power transaction. Finally, the problems existing in the technology of block chain now and all kinds of algorithm to analyze the applicability of the distributed power transactions in the future, to review three kinds of algorithm analysis, from three aspects to improve safety, share, consensus distributed transaction exchange rate and reliability, block chain core algorithm in the distributed power transactions for the future application in the field of research ideas.