The abortion within two weeks of coitus, there is a great harm, abortion surgery can not be coitus within one month after the operation. After surgery, the mouth of the uterus is in an open state, and the blood sinuses in the uterine cavity have not been completely closed, so premature coitus may bring bacteria to the vagina, retrograde infection to the uterine cavity caused by endometritis, and even infected the pelvis, affecting future pregnancy. If the fallopian tubes are blocked or pelvic adhesions are caused, it may lead to infertility in the future. It is best not to have sex within one month after the operation, if you do have sex, it is best to take oral antibiotics for 3-5 days to prevent infection, pay attention to the hygiene of the vulva, pay attention to changing the underwear every day, clean the vulva, and remember to check the ultrasound and secretion culture after the menstrual period is clean.