Allergic redness and swelling of the face are usually caused by local contact with allergenic substances, manifesting as erythema, edema with itching. The discomfort can be relieved by general treatment and medication, and the treatment needs to be carried out in consultation with a professional doctor. 1. General treatment: first of all, we need to avoid further contact with allergenic substances that cause facial allergy, and patients also need to avoid excessive scratching of the face. Patients can also avoid excessive scratching of the face. In daily life, patients can quit drinking and smoking, avoid spicy and greasy food, and exercise reasonably to promote the alleviation of symptoms. 2. Medication: patients can apply local glycerine lotion to relieve discomfort and reduce redness and swelling; when the symptoms are severe, oral anti-allergy drugs such as diphenhydramine and cetirizine can be used to improve the symptoms, and can be combined with short-term oral prednisone and other hormonal drugs. It is recommended that patients with facial allergies and redness and swelling consult a doctor in time. Drugs need to be selected under the guidance of a doctor in conjunction with their own specific circumstances, the emergence of adverse reactions to consult a doctor in a timely manner, drug allergy is prohibited.