Cesarean section surgery 20 days absolutely can not have intercourse, this time the wound is not completely healed, the uterus local incision is not completely healed, and the bad dew is not completely clean. At this time, the malodor is plasma malodor, the malodor is mixed with the uterine cavity of the shedding of tissue and contains a large number of white blood cells, this time coitus may lead to the entry of pathogenic bacteria into the uterine cavity, resulting in localized infection of the wound, the uterine cavity infection, and even pelvic inflammatory disease, sepsis and so on, the consequences are very serious, so in the cesarean section of 20 days time can not coitus. The physiological recovery period of cesarean section is 3 months, you can’t have sex within 3 months, you can have sex after 3 months, and pay attention to the contraceptive measures and hygiene when you have sex.