Randomized Controlled Trial of Acupuncture to Treat Bell's Palsy According to Different Stages

Inclusion Criteria: * patients who meet the diagnosis, stages, location criteria * the first time to onset the disease * between 1 and 70 days with the onset time of facial palsy * on one side of the face paralysis * between 15 and 70 years old with the onset age of facial palsy * willing to finish the whole observation period * with written consent form signed by themselves. Exclusion Criteria: * facial palsy caused by other disease, such as infectivity multiple radiculitis, tumor which offend temporal bone, cerebral trauma * facial palsy combine diabetes, the severe disease of heart vessel, cerebral vessel, liver, kidney, lung, and psychosis * patient with Hunt's syndrome * patient with facial spasm * pregnant women or women in lactation * patients are participating other clinical research