The cause of xerostomia is still unclear, with some studies suggesting that it may be caused by a bacterial infection, or it may still be caused by a viral infection. In addition, labiitis may be related to genetics, immune factors, allergies, and other factors such as sun exposure. The cause of lipitis is still unclear, if a patient develops granulomatous lipitis it may be due to bacterial infections such as streptococcus and mycobacteria, or it may be caused by viral infections such as herpes simplex virus. In addition, patients presenting with granulomatous labiitis are also considered to be the result of heredity, immune factors, allergies, and other causes. In addition, the patient’s lipitis may also be caused by excessive exposure to sunlight, smoking and drinking, lip licking, lip biting, irritability, dry weather and other reasons. It is recommended that the patient needs to consult a doctor in a timely manner, and the doctor will determine the cause of the lipitis based on the patient’s normal clinical and laboratory findings. In addition, patients with lipitis usually need to drink more water, keep the mouth clean, should not frequently lick or bite the lips, diet should eat less chili peppers, peppers and other spicy foods.