Peanut is an important food allergen, and the number of people allergic to peanut has increased dramatically in recent years, with the proportion of allergic people in Western developed countries having risen sharply from 5-10% 20 years ago to 20-30% now. In the United States, about 1.8 million people are allergic to peanuts, and in the United Kingdom, about one out of every 200 people is allergic to peanuts. Peanut allergy is receiving increasing attention because of its potentially dangerous, long-term nature and increasing incidence. Overseas, 90% of food allergy-induced deaths are caused by peanuts, and in the United States alone, about 100 people die each year from peanut-induced anaphylaxis. This allergy usually occurs in childhood and lasts a lifetime. In such individuals, even a tiny amount of peanuts or peanut oil can trigger a severe allergic reaction. The probable mechanism of peanut allergy is that a protein in the peanut is not fully digested into amino acids in the intestines, but is broken into foreign proteins that can be recognized by the immune system and enter the bloodstream. Peanut-induced allergy is a rapid-onset allergic reaction, with the onset occurring within half an hour of eating. Although the allergen is easier to identify, the onset of the allergy is rapid and the degree of risk is higher. Many allergic patients who eat peanuts can immediately develop respiratory symptoms such as cough and asthma. Asthma sufferers, in particular, can experience an immediate worsening of their symptoms after eating peanuts. Peanut allergy can cause facial edema, mouth ulcers, skin eruptions, and in severe cases, acute laryngeal edema, which can lead to life-threatening asphyxia, or induce anaphylactic shock, resulting in death. How to prevent adverse events induced by peanut allergy? First, avoid peanut-based foods. For example, peanut butter, peanut butter, peanut oil, peanut candy, and crunchy peanuts. Second, pay attention to the ingredient labels of foods; mixed nuts, breakfast cereals, cereal bars, breads, cakes, cookies, omelets, etc. may contain peanut ingredients. Again, watch out for food additives that may cause allergies, such as hydrogenated vegetable proteins. Peanut allergy sufferers should pay attention to the following points: 1. Try to let as many people as possible know that they are allergic to peanuts. If the patient is a child, he/she needs to inform the teachers and medical personnel when he/she goes to daycare or school. 2.When eating out, you must tell the waiter to stop putting in peanuts. 3.Let your child develop good eating habits, do not eat snacks of unknown composition, and do not eat out. To treat peanut allergy, oral biological desensitization therapy is the best treatment method nowadays, and its representative product is: Omnivac.