7 days after the drug abortion is generally clean, if 40 days later is still bleeding, consider that there may be residues in the uterus cavity caused by incomplete drug abortion, or there is infection in the uterus, may also be caused by trophoblastic tumor, need to go to the hospital in time for examination. 1, there is residue in the uterus cavity: if there is tissue residue after the drug abortion, it is necessary to clear the uterus surgery, because the tissue residue in the uterus cavity will affect the contraction of the uterus, resulting in uterine bleeding, infection, infertility. Infection, infertility, so there are residues in the uterus after medical abortion need to be cleared in time; 2, there is infection in the uterus: infection caused by the patient not paying attention to hygiene, or having sex too early. It is recommended to pay attention to hygiene and take some antibiotics to prevent uterine infection under the guidance of the doctor. Ultrasound needs to be done at the same time of treatment to see if there is any residual tissue in the uterine cavity. If there are more residual tissues, the residual tissues need to be removed after the uterine cavity infection is controlled, otherwise the residual tissues may lead to infection again after the infection is controlled; 3. Trophoblastic tumor: If there is no intrauterine residue or infection, you need to go to the hospital to have blood test for HCG. if HCG is elevated, it may be trophoblastic tumor. If it is benign trophoblastic tumor, clearance surgery is needed. If it is a malignant trophoblastic tumor, the uterus needs to be removed. After medical abortion, rest is the main focus, avoid staying up late, take oral anti-inflammatory drugs and drugs that promote uterine contraction. Avoid bathing and sexual intercourse, protect the dryness and hygiene of the pubic area, and change clothes regularly. If there is abdominal pain and heavy bleeding, you need to go to the hospital in time.