In general, the normal delivery of women, 42 days after delivery can start sex, and cesarean section of women, need to be 3 months after delivery to start sex. If you have sex too early after delivery, it is easy to cause inflammation of the reproductive system, and caesarean section mothers are prone to discomfort such as incision pain. Usually 42 days after delivery, the uterus is restored to its non-pregnant state and the vaginal dew has been cleared, however, before starting sexual life, you need to go to the hospital for examination, including general examination and gynecological examination, no abnormalities before having intercourse. The whole body examination mainly refers to blood pressure, pulse, routine blood and urine tests, and to understand the breastfeeding situation. The gynecological examination is to check whether the pelvic genitalia have been restored to a non-pregnant state, and to screen the pelvic floor muscles, and those with abnormal pelvic floor muscles need to undergo pelvic floor rehabilitation. Contraception should be used at the start of sexual life, whether or not you are menstruating, to avoid conception during breastfeeding. For women who are breastfeeding, instrumental contraception is preferred, and for women who are not breastfeeding, pharmacological contraception is available.