In the oral cavity, tongue, lips, palate mucosa, sometimes can occur some white branch-like or, reticulated lesions, part of the mucosa red or erosion, this disease is called lichen planus. This is a skin disease, but at the same time or alone in the oral mucosa is also quite a lot, to middle-aged women are more likely to develop, flat moss is a chronic inflammation of the skin and mucous membrane, not introduced by the mold ringworm, so not contagious. It is not easy for lichen planus to heal itself, but a small number of patients can heal themselves. In short, there is no special cure for oral lichen planus, generally no treatment is needed for those who have no symptoms, and can be observed regularly. For those who have severe disease, ulcers or erosions, local and systemic treatment can be used. Although there is no cure for lichen planus, but as long as patients eliminate mental tension, maintain a good and relaxed state of mind, avoid anger, live a regular life, strengthen exercise, limit smoking, alcohol and stimulating foods such as: chili, raw onion, raw garlic, etc.), eat more fresh vegetables and fruits, pay attention to oral hygiene, regular review, local irritants should first remove the stimulating factors such as: bad restorations, tartar, soft tartar etc., treatment of chronic lesions, etc. can make the disease in a stable state, no impact on life and work, and some patients can return to normal after treatment.