Food additives refer to chemical synthetic or natural substances added to food to improve the quality, color, aroma and taste of food, as well as to meet the needs of preservation and processing technology. Due to the rapid development of food industry, food additives have become an important part of modern food industry, and have become an important driving force for technological progress and technological innovation in food industry. In the use of food additives, besides ensuring their due functions and functions, the most important thing is to ensure the safety and hygiene of food. Legal basis: Article 1 of the Standard for the Use of Food Additives should meet the following basic requirements when using food additives: it should not cause any health harm to human body; Food spoilage should not be concealed; We should not cover up the quality defects of food itself or in the process of processing or use food additives for the purpose of doping, adulteration and forgery; The nutritional value of food itself should not be reduced; On the premise of achieving the expected effect, the amount used in food should be reduced as much as possible.