Many studies have reported on the beneficial effects of acupuncture for obesity, although some negative reports also existed.(Wang F. et al. 2008)Recently conducted systematic review of Pittler and Ernst reported that there was insufficient, but not conclusive evidence to support the efficacy of acupuncture and acupressure for weight loss. However, most of these studies had methodological limitation, such as lack of adequate control group or unclear specific effect of electroacupuncture alone because auricular acupuncture was administered as well. In this sudy, we had three-arm randomized controlled trial(with sham control group) to investigate whether electroacupuncture is effective in the treatment of obesity.