After giving birth to a child vagina and pelvic floor muscle relaxation does not exist the fastest way to tighten, the effect varies from person to person, you can lift the anus exercise, urine flow interruption exercise, mechanical passive movement and other ways to promote the body to become tight. 1. Lift the anus exercise: Lift the anus exercise is more convenient, can not be limited by time and place, exercise to keep the other muscles relaxed, contraction of the anus, adhere to the natural relaxation of 10 seconds, and then again contraction of the anus, the cycle of this movement, each time to carry out 50 times or so, you can promote the reproductive tract to become tight. 2. Urinary flow interruption exercise: you can suddenly contract the muscles to interrupt the flow of urine by urinating, hold for a few seconds before urinating, this method helps to improve the contraction force of the pelvic muscles, and promotes the alleviation of the phenomenon of postpartum flaccidity. 3. Mechanical passive movement: you can go to the hospital for postpartum rehabilitation training, through mechanical passive movement to promote the pelvic floor muscles and vagina to restore tension, promote the body tight. If the vagina and pelvic floor muscles become loose after giving birth to a child, it is recommended that women choose their own appropriate methods to promote recovery, and if necessary, go to the hospital for medical treatment, to take standardized methods for postpartum recovery.