Acupuncture is commonly used for the prevention of migraine, while the evidence for its efficacy is still uncertain. Current studies have not been able to determine whether the efficacy of acupuncture is due to the actual therapeutic effect of acupuncture, or a result of psychological benefits. To address this issue, we designed a clinical trial to evaluate the prophylactic efficacy of acupuncture for migraine without aura (MWoA). Furthermore, we will evaluate the impact of Chinese medicine factors and psychological factors on the efficacy of acupuncture.