The food and drug supervision department is the executive body of food safety supervision of catering services. The food and drug supervision department may take the following measures when performing its supervisory duties according to the provisions of Article 77 of the Food Safety Law: First, enter the business premises of catering service providers (places directly or indirectly related to food processing and sales, including food processing and catering places) for on-site inspection; The second is to sample the food produced, processed and sold by catering service providers; The third is to consult and copy the relevant contracts, bills, account books and other relevant materials of catering service providers; The fourth is to seal up and detain foods, illegally used food raw materials, food additives, food-related products and tools and equipment used for illegal operation or pollution; The fifth is to seal up places that illegally engage in catering service business activities.