The symptoms of dermatitis in babies are as follows: there can be a polymorphic rash of erythema, papules, vesicles, exudates, scratches, scales, crusts, often the rash is symmetrically distributed, the boundaries are not clear, and it can be accompanied by a certain degree of itching. Different topical treatments are needed depending on the situation. In case of vesicles and exudation, a topical application of 2% boric acid solution, or skin care lotion should be applied twice a day for 5-10 minutes. After the topical application, you need to apply compound polymyxin B ointment or fusidic acid ointment for treatment. After the rash has dried and crusted over, and in combination with erythematous, papular dry rash, apply hydrocortisone butyrate ointment and zinc oxide ointment 1:1 topical rub, and take oral dexloratadine dry suspension and compound glycopyrrolate capsules.