Ultrasound can usually show fetal heartbeat at 6 weeks of gestation, and at the end of the 7th week of gestation when there is still no heart tube pulsation, it should be considered as an indeterminate abortion, suggesting that the fetus has stopped developing. In addition to ultrasound to monitor whether the embryo is viable or not, it can also be combined with blood hCG and blood progesterone to determine the combination. If the embryo stops developing, the blood hCG is usually not elevated or will fall on the next day’s review, and the blood progesterone is at a low level; if the fetus stops developing, the pregnant woman’s early pregnancy reaction will disappear, and some pregnant women will have a small amount of vaginal bleeding, and there is usually no abdominal pain. Some patients may be asymptomatic until a repeat ultrasound reveals no heart tube pulsation. Prompt termination of pregnancy is recommended once the embryo is found to have stopped developing. A single induced abortion is not a cause for undue concern. However, if there are more than 2 missed miscarriages, it is recommended that both spouses undergo further genetic counseling to find out the cause of the miscarriage.