Mouth has been dry cracked skin considerations may be dehydration, bad habits, lip inflammation and other factors caused by the need for different treatment. 1. Physiological dehydration: weather changes lead to dry climate or daily intake of water is insufficient, may lead to dry cracked lips due to dehydration and skin phenomenon, the need for a large number of supplemental water, with the use of moisturizing lip balm such as petroleum jelly, so as to prevent the lips from peeling. 2. Bad habits: daily life, if usually often appear to bite the lips and lick the lips with the tongue and other bad habits, easy to lead to the lips mucous membrane weak and thus the phenomenon of dry cracked skin, the first thing you need to correct bad habits, and to do a good job of the mucous membrane of the lips care. 3. Lipitis: lips due to long-term exposure to sunlight, lack of trace elements and mental psychological factors and other aspects of the problem, may lead to the emergence of lipitis, so that the lips appear dry and cracked skin or even the phenomenon of scabs, can be coated with erythromycin ointment or adrenal glucocorticoids for treatment. There are many reasons for the dry cracked lips, it is best to go to the stomatology department for examination and diagnosis of the cause of the disease before using drugs.