HCG values of 0-5mIU/mL are normal after miscarriage, indicating a return to non-pregnant values. The HCG value in a woman’s body will rise significantly after pregnancy, and HCG will fall rapidly after miscarriage, usually about 3 weeks after miscarriage the HCG value in the body will fall to the non-pregnant state, which is about 0-5mIU/mL. If the HCG drops slowly or rises after miscarriage, or does not return to normal value after more than 4 weeks, it means that there may be incomplete miscarriage or trophoblastic diseases caused by miscarriage, and it is necessary to go to the hospital in time to check the cause and then treat it. It is generally recommended to go to the hospital for ultrasound examination about 2~3 weeks after the abortion, combined with blood HCG examination to know whether the recovery situation is normal or not.