Acupuncture for the Sleep Disorder of Chronic Fatigue Syndrome

The investigators will conduct acupuncture for participants with chronic fatigue syndrome(CFS). Firstly the investigators aim to figure out the characteristic of sleep structure of CFS and the changes caused by acupuncture. Secondly the investigators seek to investigate the characteristic of sleep-wake rhythm, slow wave sleep(SWS)-rapid eye movement(REM)sleep rhythm, and REM sleep rhythm of CFS and the readjusting of acupuncture for it. Thirdly the investigators want to know the efficacy of acupuncture for relieving the fatigue, reducing accompanying symptoms and for improving the life quality of CFS.