publicity of food safety grade of catering service. Quantitative grading bulletin board refers to a bulletin board installed by the market supervision department in order to realize the quantitative grading management of food safety in catering services. Its role is to publicize the food safety grade of catering services. The quantitative classification of catering is the rating of the annual management level of catering units by the regulatory authorities. Through the comprehensive evaluation of service facilities, technology level and management system of catering units.