Postpartum urinary incontinence (PPUI) is currently one of the most important disorders affecting women’s quality of life, the most common being stress urinary incontinence (SUI), which is mainly manifested by involuntary urinary overflow during a sudden increase in abdominal pressure (cough, exercise, etc.), without any contraction of the detrusor muscle or increase in bladder tone. The incidence of UI in the second month after delivery was found to be 38%, and its occurrence is often associated with urogenital prolapse and impaired pelvic floor muscle function due to pregnancy and childbirth, and changes in pelvic floor tissue in nerve conduction after the first vaginal delivery were confirmed in 80% of women in electrophysiology. Experiments have shown that obstetric factors such as increased number of deliveries, prolonged second stage of labor, fetal weight and large fetal head circumference, and episiotomy can lead to impairment of pelvic floor muscle function, either as a direct mechanical damage to the pelvis, or as an indirect damage to the pelvic muscles due to denervation and neurological atrophy caused by damage to the pubic nerves, which are often the main cause of postpartum urinary incontinence. These damages are often the main cause of postpartum urinary incontinence, which often causes physical and psychological pain to the mother. Functional pelvic floor training is designed to prevent and treat postpartum stress incontinence in women by addressing the mechanism of damage to the pelvic floor and bladder neck urethral sphincter. The role of postpartum pelvic floor functional training for women in promoting postpartum pelvic floor function and preventing urinary incontinence has been widely recognized. There is evidence that the functional improvement caused by pelvic floor training can be maintained for at least 5 years. The following will introduce the specific methods of pelvic floor muscle function training (this method is not limited by time, place and position, the exercise does not require a fixed pattern, lying, sitting, standing and other positions can be carried out.) 1, the beginning of time: the pelvic floor muscle function training is started after delivery 2, position and method: the mother to take the lying position, legs flexed slightly apart, inhalation, try to contract the anus for 6 ~ 8s, exhale relaxation, repeated exercises until mastery, avoid the participation of leg and hip muscles. 3, frequency: 2 in the action every 8 to 12 times as a group, 3 to 5 groups / day, each group of exercises at the end of 3 to 5 times rapid contraction, for more than 8 to 12 weeks. 4, can gradually extend the contraction time and training time for each contraction.