University libraries use social networks to promote reading; however, there are challenges to increasing the use of these library platforms, such as poor promotion and low reader participation. Therefore, these libraries need to find ways of dealing with the behavior characteristics of social network readers. In this study, a simulation experiment was developed to explore the behaviors of readers seeking book reviews and opinions on social networks. The study draws on social network theory to find the causes of students’ behavior and how these affect their selection of information. Finally, it presents strategies for peer reading promotion in university libraries.