Abstract: In big data environment, the hot spots of library and information science research will change gradually. Through the mining of hot spots, it allows researchers to better grasp the development direction of this discipline. With CNKI database as the source of information, this paper analyzed the quantity and contents of literature about big data, and concluded the research hot spots of library and information science , and analyzed the research status and concrete contents of different hot spots, expecting to reflect the development trend of library and information science.