Patients with dry and cracked lips may be caused by external stimulation, lipitis, keratitis and other factors, patients can follow the doctor’s instructions to use glycerin, tretinoin cream, gentamycin ointment, etc. for treatment. 1. External stimulation: when the patient is stimulated by toothpaste, wearing dentures, lipstick applied externally, or often licking the lips with the tongue, drinking too little water and so on may cause dry and cracked lips, the patient can use moisturizing drugs under the guidance of the doctor, such as glycerin, urea ointment, vitamin E cream, cod liver oil ointment and so on, to alleviate the symptoms of dry and cracked lips. 2. Lipitis: for lipitis caused by cracked lips patients, can be used under the guidance of a doctor 0.1% isacridine solution, 3% boric acid solution, etc. on the affected areas of wet compresses, you can also use gentamycin ophthalmic ointment and other medications to be applied locally, patients with infections can also be used to metronidazole, roxithromycin and other antibiotics for treatment. 3. Keratitis: Keratitis is divided into bacterial, fungal, viral, etc. Bacterial keratitis can use gentamycin ointment, erythromycin ointment, etc.; fungal keratitis can use clotrimazole, miconazole and other ointments; viral keratitis can use acyclovir, famciclovir, etc. for treatment. It is recommended that patients strictly follow the doctor’s instructions for medication, actively cooperate with the doctor’s treatment, pay attention to keep the affected area in life local cleanliness, hygiene, try not to eat too cold, too hot, spicy stimulating food.