Abstract: It focuses on the relationship between library WeChat reading promotion and driving technological forces. Three main promotion modes of digital university library, WeChat, website, and mobile phone library application (APP client) were studied in this paper. Based on reading promotion and our service practice,it focuses on comprehensive analysis among the acceptability, interactivity, diffusivity and timeliness of library service and other related factors. To make the reading promotion work at full capacity, should provide next level of the policies. The paper also gave our thoughts in innovation effective integration of WeChat reading promotion and other promoting modes. It can provide better reading promotion service for university library readers.