Abstract: Blockchain technology has become the focus of many researchers with its advantages such as decentralization，distributed storage，and P2P networking.The broad application prospect of blockchain technology provides new ideas and possibilities for solving the problem existing in the resource sharing of university libraries.By summarizing the advantage and characteristic of blockchain technology and analyzing the disadvantage of library traditional resource sharing services，this paper designs the library resource sharing service model based on blockchain technology，describes the implementation process of the service on the blockchain in detail，the library resource sharing service based on blockchain technology has been really realized from“library to library”,“library to person ”and “ person to person” three dimensions.

Key words: blockchain；university library；resource sharing