Face allergy is red, swollen and itchy, patients should first clarify the allergens and stay away, common animal hair, pollen, dust mites and other inhalant allergens, seafood, mango, litchi and other food-derived allergens, as well as skin care products, cosmetics and other chemical agents allergens. In addition, patients can also alleviate allergies through medication and improve living and eating habits: 1. Stay away from allergens: The first thing to do after allergies occur is to reduce skin irritation. In addition to staying away from allergens, patients should keep their faces clean, wash their faces with warm water in the morning and evening, and use soft towels when wiping their faces. When going out, do a good job of facial sun protection, including wearing masks, hats, umbrellas, etc., to reduce ultraviolet stimulation; 2, medication: If the patient can not be relieved after reducing skin irritation, you should promptly consult a doctor. Generally, topical hydrocortisone cream, mometasone furoate cream and other drugs can be used as prescribed by the doctor in order to reduce inflammation and itching. Oral antihistamines can also be used, commonly used drugs are levocetirizine hydrochloride tablets, loratadine tablets, etc. If necessary, intravenous medication can be administered as prescribed by the doctor. 3. Improve living and eating habits: When patients have allergies, they should avoid intake of spicy, greasy and stimulating diets such as chili, ginger, garlic, hot pot, strong tea, milk tea, fried chicken and alcohol to avoid aggravating the symptoms of skin redness and itching. At the same time, you should ensure sufficient sleep and avoid bad habits such as staying up late and smoking.