The corners of the mouth fall off the skin is suffering from chronic lipitis and keratitis, because of the lack of vitamin B and vitamin C, mostly occurring in the people who have a bad habit of partiality and picky eating. The main symptoms of chronic lipitis are chapped lips, flaking, dry, cracked and with bacterial infections appearing erosion, the main cause in addition to the external environment of cold, dry and wind and sun stimulation, but also mainly with the body of B vitamins and vitamin C deficiency. Therefore, the corners of the mouth peeling patients go out to wear a mask, apply lip balm, eat more fresh vegetables, fruits, to ensure that the body sufficient vitamin C. Vitamin B in addition to taking vitamin B tablets, but also through the method of dietary supplementation, such as eating more coarse grains and cereals, seafood, soy products, dairy products, animal liver, which are rich in vitamin B. The main cause of the disease, in addition to the external environment of cold and dry and sunburn stimulation, but also mainly related to the body of B vitamins and vitamin C deficiency.