Skinning of the mouth may be caused by lipitis, vitamin deficiency, lack of moisture and other reasons. 1. Lipitis: Lipitis points usually cause dry mouth, skinning, swelling and other symptoms. You need to avoid irritating factors and change bad habits. Patients can use medications such as gentamycin ophthalmic ointment and tretinoin cream under the advice of a doctor. 2. Lack of vitamins: patients who lack vitamins may experience symptoms such as dry and flaky mouth, cracking, and white secretions at the corners of the mouth. Patients can take vitamins under the guidance of a doctor. Excessive or improper use may lead to dizziness, drowsiness, severe poisoning and other adverse reactions. 3. Lack of moisture: usually because of the lack of water leading to dry lips, and because of the dry weather in autumn and winter, and daily drinking less water, resulting in less water in the body, resulting in symptoms of dry cracked lips and skin. It is recommended that patients maintain adequate water intake, eat more vitamin-rich foods such as vegetables and fruits, and also appropriate wet compresses. Patients should not self-medicate to avoid danger.