After the smooth delivery of the general 42 days can be cohabitation, but the recovery of the mother there are individual differences, need to be determined on a case-by-case basis, can not be generalized. The process of delivering a fetus and its appendages from the mother’s body is referred to as “smooth labor”. After smooth labor, a woman enters the puerperium, at which time the body’s hormone levels change, and the body’s organs begin to enter the repair stage, and the uterus begins to recover, and under normal circumstances, it takes 42 days to complete the process of repair. Early coitus will affect the recovery of the female body, resulting in gynecological inflammation, so it is recommended that after 42 days of normal delivery, if the female body and mental and psychological aspects of the recovery is good, you can coitus. If the woman had a lateral cut or perineal tear during the birth, the wound will not heal well on the 42nd day after delivery, and intercourse at this time will lead to the deterioration of the wound, so it is not advisable to have intercourse; if the uterus is not well restored on the 42nd day after delivery, and there is still bloody discharge, and intercourse at this time may lead to gynecological inflammation, and it is not advisable to have intercourse either. Due to the different specific conditions of women after delivery, there are individualized differences in the time of coitus after delivery, if necessary, consult a professional physician, so as not to lead to adverse consequences.