The food safety accident on campus is a very serious matter. In order to avoid this kind of accident, the following are some common preventive measures:

1. Strengthen the screening and evaluation of suppliers: schools should pay attention to suppliers' licenses and qualification certificates to ensure that they have legal and compliance qualifications.

2. Strict food procurement procedures: the school should establish a sound food procurement record and tracking record system, manage and supervise the procurement, acceptance and storage, and conduct self-examination and inspection in a compliant and standardized manner.

3. supervision and inspection system: the school should establish food safety guarantee, including the implementation of certain nutrition standards and cookbooks, and the establishment of food safety management and food hygiene supervision and inspection system, and the implementation of a management model of checks at different levels and mutual supervision.

4. health education: the school should carry out publicity and education on food safety legal education and other aspects to improve students' safety awareness and cultivate good safety and hygiene habits.

5. update and maintain the equipment in time: the school should update and maintain the food processing and storage facilities in time to ensure that it is conducive to food preservation and hygiene.

To sum up, regarding the food safety on campus, the school should establish a perfect management system, keep records of all food in and out, and conduct multi-level supervision and inspection, so as to avoid food safety accidents as much as possible.