At present, there is no medicine to eradicate lichen planus. It can be improved through general treatment, medication and physical therapy. 1. General treatment: pay attention to maintain regular work and rest, avoid intake of tobacco, alcohol and spicy stimulating food, pay attention to the protection of the affected area, choose warm water to clean, do not scratch, and strengthen the skin moisturizing. 2. Medication: (1) Topical medication: can be used under the guidance of the doctor to treat with topical medication such as retinoic acid ointment, Dinaid cream, tacrolimus ointment and so on. Those with vesicular oral damage can apply lidocaine gargle to relieve symptoms. (2) Systemic drugs: severe itching can be oral antihistamines such as loratadine under the guidance of a doctor. Those with generalized skin lesions can take oral prednisone, avitamin A and other drugs. Some of the more serious or persistent people can also be considered with oral hydroxychloroquine, levamisole and other treatment. 3. Physical therapy: photochemotherapy, such as PUVA or narrow-spectrum UVB, is also effective in reducing skin lesions. It is recommended that patients with lichen planus should go to a regular hospital and be treated under the guidance of a doctor, rather than blindly using medication.