Legal analysis: The food safety supervision of catering services is carried out according to the principle of territoriality. After consumers find that catering service providers have violated food safety laws and regulations, they should promptly complain and report to the local food and drug supervision and administration department. After receiving complaints and reports, the food and drug supervision department shall first determine whether it belongs to its jurisdiction, and if it does not, it will be transferred to the food and drug supervision and administration department with jurisdiction, and the food and drug supervision and administration department that accepts the transfer shall promptly feedback the handling of the transferred case to the food and drug supervision and administration department that transferred the case; Belong to the jurisdiction of this area, the food and drug supervision department will seriously accept it and verify it in time. The food and drug supervision department will determine the legal responsibility of the catering service provider according to the nature of the illegal business behavior of the catering service provider, and make corresponding penalties according to law. When consumers complain and report, they should pay special attention to retaining evidence and provide it to the food and drug supervision department in time.

legal basis: article 4 of the food safety law of the people's Republic of China is responsible for the safety of the food they produce and operate. Food producers and business operators shall engage in production and business activities in accordance with laws, regulations and food safety standards, ensure food safety, be honest and self-disciplined, be responsible to the society and the public, accept social supervision and assume social responsibilities.