Generally speaking, the school canteen refers to the place where students eat together. Because its service object is mainly students, the particularity of the service object, large amount of meals, concentrated dining time and wide social influence, the food safety in school canteens has become particularly important. In addition, corruption in school canteens is also a very important issue. Recently, it was revealed in a school that a person in charge used his position to embezzle students' food expenses for more than one year, which was equivalent to 5 yuan being deducted from the lunch expenses of each student in 8.5 yuan every day. How to improve the supervision system of school canteens has become the focus of people's attention.

first of all, information asymmetry led to this incident. First, the information asymmetry between students and school canteen operators. Because of their young age and lack of social experience, students in school have poor ability to identify food safety. Even after eating, it is difficult for them to distinguish whether the food is fresh or contains harmful substances, or whether it is short of weight, which makes students at a disadvantage in obtaining food information, so that the incident can happen for so long. In this regard, parents or relevant departments can strengthen the inquiry of students and learn about canteen information from students.

Second, the operators and schools of school canteens. At present, most of the management of primary and secondary school canteens is handed over to third-party catering units for unified management. In this case, it is easy for schools to know nothing about the food safety situation in school canteens. Once the third-party catering unit is untrue or intentionally conceals the food safety information in the canteen, it will lead to the acquisition of food safety information by schools and third-party catering units. In this incident, although it was not handed over to a third party, the school did not do a good job in supervision, which led the director to profit from it. In this regard, schools must strengthen the supervision of canteens, not let one person be responsible, and strengthen the containment of power.

thirdly, between the government supervision department and the school canteen operators, the government supervision department has the supervision frequency and supervision. The government must strengthen the supervision of school canteens.