the Effect of Transcutaneous Electrical Acupoint Stimulation on the Quality of Oocyte on Poor Ovarian Response(POR)

Patients in the experimental group will be given TEAS treatment for 12 weeks prior to COS. The patients will be given three times acupuncture every week except menstruation. The acupuncture acupoint locations are as follows: head acupoint Baihui(DU20), abdominal acupoint Zhongji (RN3), Guanyuan (RN4), Zigong(EX-CA1), leg acupoint Sanyinjiao(SP6), waist acupoint Shenyu (BL23) and Guanyuanyu(BL26).