As the influence of Wechat becomes increasingly strong in the internet era, more and more colleges and universities begin to use Public WeChat to carry out new media promotion, teaching innovation and campus service. Through analyzing the type of public WeChat and its general application in colleges and universities, as well as the research on netbox, this paper helps to the type orientation and service location of college public WeChat, improves the service ability and contributes to the sustainable development of education in universities.