Ultrasound may be able to detect after miscarriage, depending on the number of miscarriages, whether the endometrium is damaged, and so on. If the abortion is more frequent, for example, more than 3 times, it is easy to cause endometrial damage, cervical adhesion may occur, ultrasound examination found that the cervical canal is shorter, the endometrial echogenicity is not uniform, etc. Experienced doctors can find out the history of previous abortions through ultrasound examination. If the number of abortions is less and the recovery after abortion is better, the uterine cavity will not have obvious changes during ultrasound examination and the history of abortion cannot be detected. In addition, if the miscarriage is longer, the endometrial damage is not serious, and the uterine adnexa recovers better, ultrasound can not detect it. After the abortion, you must pay attention to rest, and strictly follow the doctor’s instructions for care, if necessary, with professional doctors for medication, to promote the recovery of the uterine lining, to avoid abortion damage to the body.