The time for spontaneous expulsion varies from person to person and cannot be generalized. Usually, it can be expelled naturally within 30 days after the abortion, and if it is early pregnancy, it can be expelled naturally about 7 days after the abortion, but there are a few patients who cannot be expelled naturally, which is an indeterminate abortion. After the embryo abortion, the pregnant woman’s pregnancy reaction will gradually subside, such as nausea, vomiting and other early pregnancy reaction disappears, breast swelling and pain will be reduced, the vagina appears dark red bloody leukorrhea, and then lower abdominal pain to expel the embryo. Some patients may have miscarriage after only abdominal pain, or even asymptomatic miscarriage after embryonic arrest. Women who are pregnant need to take regular pregnancy tests and observe the fetal heartbeat. If the embryo stops developing or cannot be expelled naturally so that the dead embryo does not cause diffuse intravascular coagulation leading to severe bleeding, they must go to the hospital’s obstetrics and gynecology department immediately.