Objective : To investigate the impact of childbirth on pubococcygeal muscle of primiparous women in China, understand factors associated with pubococcygeal muscle, and investigate the muscular training in postpartum health care. 目的:了解分娩对妇女盆底肌肉强度的影响,以及妇女产后耻骨尾骨肌(PM)(PC肌)强度的影响因素,及产后生殖保健服务中盆肌锻炼情况。