This study takes the WeChat official account of 42 university libraries in China during the epidemic period as the research object, and uses Python crawler to collect information from the platform the group WeChat official account communication power index, WeChat public platform communication index, WeChat official account single tweet communication power index. This paper measures the "Double First-Class" WeChat official account information communication of university libraries, and carries out the WeChat official account information push classification work by referring to expert papers, calculates the subject information push service ability, puts forward suggestions, and points out the research limitations.