After cesarean section, it is usually recommended to have sex after three months, and the same is true for second child cesarean section. If you have sex too soon after cesarean section, not only is it easy to cause infection in the uterine cavity, triggering vaginitis, pelvic inflammatory disease, endometritis and other gynecological diseases, but it may also affect the healing of the cesarean section wound, increasing the risk of wound infection. In addition, due to changes in hormone levels in the body after delivery, resulting in ovarian ovulation cycle, premature sexual intercourse is prone to unwanted pregnancy, affecting the body’s recovery and breastfeeding. Therefore, the second child cesarean section within three months after the operation do not have sex, to wait for the uterus and wound recovery is good, after the discharge of bad dew completely, and then reasonable arrangements for sexual life. In addition, when having sex three months after delivery, because the uterus has been injured twice, it is important to follow the doctor’s advice, pay attention to strict contraception and take reliable contraceptive measures.