If a woman feels that her vagina is lax after giving birth and feels like gas is passing through it, this is due to the laxity of the pelvic floor and vagina. During pregnancy, the uterus grows significantly and presses on the pelvic floor for a long time, which leads to loosening of the pelvic floor tissues. In addition, during delivery, the fetus is delivered through the vagina, which leads to extreme dilatation of the vaginal wall and loosening of the pelvic floor ligaments, which leads to loosening of the vagina and bulging of the vaginal wall after delivery. In a few cases, women may even have trouble holding their urine and may leak after coughing. In this case, the main thing is to take reasonable rest after delivery and to carry out pelvic floor repair as soon as possible. If systematic pelvic floor repair can be carried out more than one month after delivery, these symptoms can be improved significantly.