 Methods: A total of 172 participants diagnosed with polycystic ovary syndrome would be randomly assigned to either the acupuncture group or sham-acupuncture group, at a ratio of 1:1. Participants in both groups will receive treatment for 12 weeks, three times a week. The primary outcome will be the proportion of participants with at least a 50 increase from baseline in the monthly menstrual frequency from baseline after 12 weeks intervention, while secondary outcomes will be the difference in anthropometrics, serum hormone level, ovarian morphology, anxiety and depression, and quality of life from baseline to after 12 weeks intervention and to 12 weeks post-intervention follow-up between groups. 