Dry lips have physiological and pathological causes, the former include dehydration, spicy stimulating food stimulation, the latter have lipitis, gingivitis, diabetes and other diseases. Most cases of dry lips are caused by drinking less water recently, such as irregular lifestyle, often stay up late, lack of sleep, etc., and bad dietary habits, such as often eat spicy and stimulating food, salty food, will stimulate the skin of the lips resulting in dry lips, need to adjust the diet, eat more vegetables and fruits, drink more water, quit smoking and drinking, eat less spicy and stimulating food, etc.. Lipitis with dry lips, skin, crust as the main manifestation, most can be self-healing, part of the continued non-healing may be cancerous, the treatment of local medication, symptomatic treatment, such as local wet compresses combined with microwave therapy, medication with gentamycin ointment, tretinoin cream and so on. Gingivitis is a common gum disease, caused by plaque on the surface of the gums, non-specific inflammation of the soft tissues of the gums, manifested as bleeding gums when brushing teeth or eating hard objects, dry lips, the treatment needs to control plaque and removal of calculus, local hydrogen peroxide solution to rinse the gum grooves, and if necessary, antibacterial gargle mouthwash rinsing, such as chlorhexidine. The above mentioned medications need to be used under medical supervision.