Facial allergies can be treated by detaching allergens, anti-allergy treatment, desensitization treatment and facial protection. 1. Disengage from allergens: when facial allergy, the first thing you need to do is to disengage from allergens and avoid continuous contact with allergenic skin care products, pollen, dust, dander and other allergenic substances, so as to avoid continuous triggering of allergic reactions. 2. Anti-allergy treatment: systematic oral chlorpheniramine maleate, loratadine and other antihistamines, if necessary, apply hydrocortisone, dexamethasone and other glucocorticoid drugs to relieve allergic reactions. 3. Desensitization treatment: find out the allergens that induce facial allergic reaction through skin test, and prepare desensitizing solution for repeated injection, so that the body can be repeatedly exposed to allergen stimulation and increase the tolerance to allergens. 4. Facial protection: avoid frequent washing of the face, avoid scratching and rubbing the face to prevent skin breakout and infection. Pay attention to the use of drugs under the guidance of physicians.