Generally embryonic arrest rarely occurs spontaneously at about 2 weeks, but most of them require abortion when a definitive diagnosis is made. Embryonic arrest is within 12 weeks of gestation, due to embryonic dysplasia caused by the presence of a gestational sac but no embryonic buds or embryonic buds without fetal heartbeat, and no change in review after active treatment as prescribed by the doctor. Generally most of the embryonic failure requires abortion, including surgical or medication abortion, and a few women will have spontaneous abortion about 2 weeks after fetal failure. For pregnant women with a history of repeated spontaneous abortions or a history of fetal abruption and other high-risk factors, ultrasound examinations should be performed during early pregnancy under the guidance of a doctor to understand the development of the embryo, and combined with the levels of blood HCG (human chorionic gonadotropin), progesterone, and estradiol to deal with the problem in a timely manner, and review the ultrasound on time, and terminate the pregnancy promptly when it is clear that the fetus has stopped laboring. Termination of pregnancy should be carried out in a timely manner under the guidance of the doctor after the embryo has ceased to exist.