Allergies are generally difficult to eradicate and are an idiosyncratic constitution formed on the basis of congenital heredity, and can only be reduced by some methods. There are two types of allergies, the first is hereditary, i.e. congenital allergies, and the second is allergies that appear later in life. Allergies are difficult to cure but can be improved. To improve allergies, you need to pay attention to: 1. Get rid of allergens: within a short period of time, try to avoid eating foods that can easily induce allergies, and do not come into contact with gases and dusts that can easily induce allergies. Avoid recurrent allergic reactions, which can easily lead to a decline in immune function. 2. Improve immunity: Improving allergic constitution requires regulating immunity, which can be treated by oral medication, intramuscular injection or intravenous infusion. 3. Improve lifestyle: Try not to stay up late to improve allergic constitution, develop reasonable and regular sleep, eat more fresh fruits and vegetables, and combine with moderate exercise to continuously improve and enhance physical fitness.