The evidence required for food complaints is as follows:

1. Unsafe food exists. To prove the existence of unsafe food, you should keep the unfinished food together with the dishes with packaging and insects found; Food packaging found to contain excessive additives or additives that are not allowed to be used;

2. The suppliers of unsafe food include manufacturers, sellers and catering service enterprises, and the suppliers of unsafe food can be proved by the name of the manufacturer printed on the food packaging, the shopping receipt, invoice (with details) provided by the merchants, and the business license hanging in the business premises. It is suggested that consumers must ask for invoices (or receipts) when making food and beverage consumption, and should keep relevant evidence;

3. Provide witness testimony or apply to the court for obtaining the monitoring video of the merchant;

4. Complain in time, for example, in food production, you can complain to the quality supervision department; In food sales, you can complain to the industrial and commercial departments; When dining in a catering enterprise, you can complain to the Food and Drug Administration.

article 11 of the measures for the administration of food and drug complaints and reports

a complainant shall provide objective and true complaint and report materials and evidence, explain the basic process of the matter, and provide detailed information such as the name, address and specific acts suspected of violating the law of the object of complaint and report.

advocate real-name complaints and reports. If the complainant is unwilling to provide his name, identity, contact information and other personal information or is unwilling to publicly report the complaint, he should be respected.