The paper takes Shenyang Pharmaceutical University Library as an example, extracts and analyzes the graphical and textual data of users of the library's WeChat public platform. And based on the results, it comes up with promotion countermeasures for WeChat of medical university library, including attracting more attention from users by intensifying publicity on the platform, focusing on users' needs and adjusting the pushed content accordingly, ensuring the quality of the pushed information and making clear of the focuses of service work.