The blockchain technology studied in this paper is a distributed data security and service technology that integrates information security, artificial intelligence, distributed cloud storage and big data analysis. Blockchain technology can be applied in many fields such as international settlement, equity trading, insurance services, digital rights, financial technology, and electronic payment etc. Through the research and analysis of the basic model and composition technology of blockchain, this paper proposes that the future innovation and development direction of blockchain technology in the financial field is distributed security authentication technology, artificial intelligence technology, security cloud storage technology and big data processing technology are effectively combined with the blockchain technology to design a financial service and management platform.