Dry, itchy, red and swollen lips are considered as possible angioneurotic edema and labyrinthitis, as follows: 1. Angioneurotic edema: may be due to genetic factors or allergy caused by contact with lip gloss, spicy and stimulating food, or allergy caused by sunlight ultraviolet radiation; 2. Labyrinthitis: may be due to frequent licking of the lips and causing local irritation, or oral consumption of hair products such as beef and mutton, seafood, etc., consumption of mango, durian, Mango, durian, mangosteen, dragon fruit and other fruits that can easily cause allergy. Patients can take oral olopatadine hydrochloride tablets and apply zinc oxide ointment topically for treatment.