The recovery time of HCG in the body after abortion takes about 3 weeks, which is related to whether the uterus is cleaned up at once or whether there is any residue, and so on. Whether the pregnancy is terminated by abortion or medication, as long as the gestational sac is discharged, the human chorionic gonadotropin in the body will begin to decline, and without a fertilized egg, the human chorionic gonadotropin secretion will not continue. In itself, because the metabolism of human chorionic gonadotropin takes time, it may not be able to recover completely within a short period of time, and it will take about 3 weeks after the miscarriage for it to return to normal levels. It is normal for the time to recede slightly as long as a significant drop can occur. After the miscarriage, a follow-up examination by ultrasound is needed in the hospital to find out whether there is any residue in the uterus and to check the human chorionic gonadotropin level.