Blockchain, as a new technology rising gradually and popularizing day by day, is a comprehensive application of many mature technologies, which can be effectively applied to the construction of digital resources in the digital transformation of libraries. This paper analyzes the characteristics of block chains, discusses the practical application of these features in the construction of library digital resources, realizes the sharing and copyright protection of digital resources by using decentralization and unauthorized attributes, and realizes the sustainable evolution and development of future transformation by using the programmable intelligent contract. This paper puts forward the framework of Library Digital Resources Platform Based on block chain, analyzes on the shortcomings and difficulties to realize the platform, and advances that libraries should pay attention to the development of block chain technology.