Abstract: By analyzing the main service modes of university mobile libraries and the user behavior of university mobile libraries under the social network environment, this paper further develops and perfects the theoretical research on the user information behavior of university mobile libraries based on social network. When analyzing the information behavior of users in mobile libraries in colleges and universities, based on the self-efficacy theory and user portrait theory, this paper reveals the different behavior needs of users, uses concept lattice method and superstar mobile libraries as data sources to analyze users' behavior, so as to consider users' basic attributes and users'needs and preferences in many ways, and move for colleges and universities. The study of information behavior of mobile library users provides a reference for the improvement of information service of mobile library, which has important theoretical significance and practical value.

Key words: social network, university mobile library, information behavior