Cracked lips may be caused by physiological factors, accompanied by dry flaking can be used, chapped is not recommended to use erythromycin ointment, different situations are treated differently. Environmental dryness is the skin dehydration may also lead to physiological chapped lips, this time only need to do a good job of skin moisturizing care can be, do not need to use erythromycin ointment treatment. If the mucous membrane of the lips is mainly dry and flaky, erythromycin ointment can be applied at this time, at the same time, if there is a Candida albicans infection, you need to take antifungal drugs, such as ketoconazole, miconazole and so on. If the lips with chapped, oozing or crusting, should be used first boric acid solution for external treatment, such as chapped basic healing, no oozing, no scabs can be coated with erythromycin ointment. Dry and cracked lips may also be caused by xerostomia, which is caused by lack of nutrition. It is recommended to take appropriate supplements of zinc gluconate, vitamin D, iron and so on. Symptoms aggravated should be timely consultation, under the guidance of the doctor’s treatment, not unauthorized use of medication, pay attention to the moisturizing care of the lips, eat less spicy food, do not stay up late.