Food safety issues are related to the national life, which affect many areas and are global. Based on the problems of China's food safety surveillance system, several countermeasures were applied to improve the institutional system, such as setting up the safety surveillance system model, combining multiple supervision agencies, and setting up the overall supervision model of food safety production. Applying the internet of things technology, especially sensor network technology to build a food safety surveillance information system can improve the surveillance means of food safety.