Jiangnong Post Station is an all-round and three-dimensional new upgraded campus service mode based on the "Internet". It has the nature of a public welfare platform that serves all teachers and students for sustainable operation. It is committed to solving the contradiction between the rapid development of the Internet and the lag of information services in schools, and providing a new platform with high quality, high reputation and high efficiency for traditional campus life services, information sharing, campus culture promotion, scientific and technological innovation, learning guidance and employment consultation. Provide convenience for the daily study and life of school teachers and students, and strengthen campus services and campus public welfare construction. At present, the platform has more than 18000 users, providing work-study jobs for more than 100 people. The purpose of the platform is to establish a sustainable non-profit platform for colleges and universities to serve all teachers and students. In addition, the funds obtained from the project, except for the needs of platform maintenance and development, are all part-time students in the school, providing a large number of reliable learning and living information free of charge, providing a large number of high-quality part-time jobs, and connecting various scattered organizations in the school into a network to update and upgrade the school's operating system. Colleges and universities are like a special community. The community is small but the phenomenon of information island is very serious. It is urgent to connect all organizations into a whole to speed up the information flow and improve the service quality of colleges and universities. Therefore, we thought of setting up such a platform. Jiangnong Post is a non-profit public welfare platform. After some research, we know that the platform is easy to get the support of students and schools, and it is very feasible to start a business. The platform has a low starting point, rich resources that can be effectively used, and strong practicality. Of course, practice is the only criterion for testing truth, and the platform has had three years of operational practice as of 2019, and the operational results are in line with expectations and even better than expected in many aspects, and the facts have given it a strong proof of its practicality.