Medical abortion is a method of terminating early pregnancy. The probability of hemorrhage from a medical abortion is related to the time of menopause and the size of the gestational sac; the longer the time of menopause and the larger the gestational sac, the higher the probability of hemorrhage from a medical abortion. The probability of haemorrhage is only 1%-3% for medical abortion within 49 days, but the probability of haemorrhage can increase to 5% for medical abortion around 60 days after menopause. As the gestational sac increases in size over a longer period of time, the chance of heavy bleeding from abortion increases significantly. The most common reason for hemorrhage is that after taking abortion drugs, the pregnancy tissue cannot be discharged from the uterine cavity, which affects the contraction of the uterus, or the pregnancy tissue is retained in the lower part of the uterine cavity, or even in the cervical opening, resulting in poor contraction of the lower part of the uterus, which affects the discharge of blood from the uterine cavity, which in turn affects the contraction and leads to hemorrhage. Then there is the abnormal coagulation function, which rarely happens because the relevant laboratory tests will be completed before abortion. There is also the factor of infection, especially if the patient is bleeding while taking mifepristone, because the bleeding time is long, it is easy to breed bacteria. So medical abortion is recommended to go to a regular hospital under the guidance of a doctor.