Intercourse after 25 days of abortion does not have a great impact on the patient’s body. During this period of time, the patient’s vaginal bleeding has stopped and the cervical opening has closed, so the chance of infection caused by coitus is not great. However, if the patient does not do a good job of contraception during this period of time, it may lead to unwanted pregnancy. Because after the abortion surgery, the patient’s uterine lining and ovarian function will be affected, so the patient’s menstruation time can be delayed, ovulation can also be disrupted. Therefore, 25 days after the abortion is not necessarily the patient’s safe period, if the patient ovulation during this period, and did not do a good job of contraception, may lead to the possibility of unwanted pregnancy. In this case, the patient needs to pay attention to the fact that if there is no menstruation within 10 days after intercourse, it is necessary to check the blood chorionic gonadotropin, to carry out screening.