Recent years, with the development of the era of big data, the construction of smart canteens as an important part of smart campus has attracted increasing attention. Since the outbreak of Covid-19, it is increasingly urgent to accelerate the construction of smart canteens in particular. In addition, Internet of Things has greatly promoted the rapid development of smart canteens. This paper introduces the new exploration of China University of Geosciences (Beijing) in the construction of smart canteens. Based on Internet of Things technology, Smart College Canteens has been developed with the help of mobile Internet, big data and cloud computing. The platform has changed the traditional consumption and operation mode of canteens on campus currently so as to create a brand-new management system for the convenience of students. Furthermore, it realizes the refined management and intensive management, improves the service, guides a healthy diet for students and teachers, and improves the efficiency and level of logistics in canteens