1. Improper supplier selection: In order to pursue low prices, some canteens choose suppliers with poor quality, which will affect the quality and safety of food;
2. The quality control of ingredients is not strict: some canteens have not established a sound food safety management system, and the quality supervision of ingredients is not strict enough, which may lead to the use of deteriorated or expired ingredients;
3. Single dishes: Some canteens have single dishes and repeated tastes, lacking novelty and creativity, which cannot meet the diverse taste needs of students.