[Purpose/significance] This paper aims to provide experience and suggestions about tweets content construction of WeChat public platform for university libraries. [Method/process] By the methods of case analysis, network data research and comparative analysis, this paper introduced the concept, principle, effect and management mode on the tweets content construction of WeChat public number of Beijing normal university library. [Result/conclusion] This paper provides the following suggestions for the development of university libraries' WeChat public platforms:focus on the overall plan of WeChat content plate, guarantee the originality of copywriter, pay attention to the series of high-quality original tweets integrated into the column, and strengthen cooperation with other new medias in the university. Moreover, the construction of management system should be promoted.