Lip moss, also known as lichen planus, is a chronic inflammatory skin disease of unknown etiology, mostly related to autoimmunity, heredity, infection, psychoneurology, etc. It can be handled through medication, physical therapy, surgical treatment, psychotherapy and other means. 1. medication: patients with lichen planus lipitis can use 0.1% retinoic acid ointment to reduce the degree of keratinization, but also can be used in lactic acid acridine solution coated with the affected area, the serious can be taken orally levamisole tablets, to improve cellular immune function. 2. Physical therapy: patients with lichen planus lipitis can also combine laser, freezing and other physical therapy to assist in the treatment of the disease. 3. Surgical treatment: If the symptoms have been found to have a tendency to malignant changes or the examination has been diagnosed with malignant changes in patients with lichen planus, immediate surgical resection of the affected area is required. 4. Psychological treatment: If the moss is caused by excessive psychological pressure, nervousness and other conditions, you need to communicate with a psychiatrist in a timely manner, and actively carry out psychological conditioning to alleviate the discomfort. It is recommended that patients with lichen planus should seek medical treatment in a timely manner, and at the same time, it is important to note that the above drugs should be used under the guidance of a doctor, so as to avoid blind use of medication, the symptoms of discomfort.