Dry and flaky mouth may be caused by allergic lipitis, lack of water in the body, anemia and other reasons. 1. Allergic Lipitis: It is an inflammatory reaction caused by the skin of the mouth and lips and its surrounding skin coming into contact with allergy-inducing substances. For example, patients use inappropriate lipstick, eat irritating food, etc., which leads to allergic lipitis, often manifested as red, swollen, dry, skinned mouth and other symptoms. 2. Lack of water in the body: If the patient’s body is not enough water, affecting the normal metabolism, it will cause the mouth area of the skin dry, flaky, etc., which often occurs in the fall and winter drier season. 3. Anemia: patients due to poor impact, blood loss and other reasons resulting in anemia, there will also be a dry mouth, peeling phenomenon. Patients should pay attention to daily lip care, drink more water, eat more fresh fruits and vegetables to supplement vitamins. If it is due to a certain disease caused by the mouth dry skinned, need to consult the examination, under the guidance of the doctor for relevant treatment.