Most of the bleeding during intercourse after half a month of IUD placement is abnormal, and ultrasound and cervical cancer screening should be done to rule out any downward movement of the device or cervical lesions. Most bleeding stops half a month after the IUD is placed, and there should be no bleeding during intercourse at this time. It is recommended to complete cervical cancer screening to rule out cervical lesions and ultrasound to rule out the displacement of the IUD. If the position of the IUD is normal, the possibility of cervical lesions should be ruled out. Bleeding at this time may be caused by the side effects of the IUD or cervicitis, etc. It is recommended to consult a doctor in time to find out the cause of the bleeding and actively treat it under the doctor’s guidance. IUD placement is generally recommended in the menstrual period clean 3-7 days, and can not have intercourse after menstruation, postoperative rest is recommended to avoid heavy labor, within two weeks prohibit coitus, tub baths, swimming and other activities, postoperative regular checkups, if any discomfort in a timely manner to the hospital.