The redness and itching of the face are mostly considered to be caused by dermatitis, acute eczema, urticaria and other diseases, which need to be treated with appropriate skin care and medication for specific reasons. 1, acute eczema: the skin lesion performance of acute eczema mainly includes erythema, papules, blisters, vesicles and exudates, which can make the face appear red, swollen, itchy and other symptoms. It can be treated with antihistamine drugs under the guidance of a doctor; 2. Urticaria: a limited edema reaction due to the expansion and increased permeability of small blood vessels in the skin and mucous membranes, causing redness, swelling, itching and other symptoms on the face, which usually does not last more than 24 hours, but is prone to recurring episodes. It is possible to use topical glyburide lotion, and the recurring attacker needs to take oral antihistamines; 3. Allergic dermatitis: It is an inflammatory reaction that occurs after direct contact between the skin and external animal, plant or chemical irritants or allergens, which can cause localized redness, swelling, itching and other symptoms of the lesion. Treatment requires removal of the suspected contact, oral antihistamines, topical zinc oxide cream, cyproheptadine cream, etc. In severe cases, appropriate short-term oral or topical glucocorticoids can be used. When there is vesicular exudation, saline or boric acid solution can be used to wet compress; 4, solar dermatitis: is exposed skin due to excessive exposure to sunlight erythema, edema, blisters and other skin damage photomorphic reactions, can make the lesion local redness, swelling, itching and other symptoms. The less severe cases can be used for furnace glycolic lotion, severe cases can be used for ice water wet compresses, can be used externally corticosteroid cream; 5, hormone dependent dermatitis: due to long-term repeated improper external use of hormones caused by a skin disease, so that the local skin is infiltrated by inflammatory cells, causing redness and swelling with itching symptoms. It can be used topically with calcium phosphatase inhibitor, and at the same time, skin barrier repair milk can be used; when there is erosion and exudation, saline or boric acid solution can be used as a wet compress. If the facial redness, swelling and itching are serious, it is recommended to go to the hospital to find out the specific cause before treatment to avoid unnecessary effects, at the same time, the above drugs need to be used under the guidance of a professional physician.