Usually a moderate amount of legal food additives will not cause any obvious harm to the body, but an excessive amount of food additives will cause adverse effects on the body, such as poisoning and inducing diseases. Food additives are mainly chemical synthetic or natural substances that are added to food for its quality, color, aroma and taste, as well as for preservation and processing needs. And there are more kinds of food additives, mainly antioxidants, bleaching agents, coloring agents, flavor enhancers, preservatives and so on. However, within the normal amount of additives, food legal additives do not cause significant harm to human body. If food additives are in excess, they may cause adverse effects on the human body, and some patients may be poisoned, and some patients may increase the risk of heart disease, diabetes, cancer and other diseases after excessive intake of food additives. Excessive intake of additives by babies may also affect their growth and development. It is recommended to go to regular stores to buy food to prevent excessive food additives from causing harm to the body.