Abortion is performed on 40-50 days of pregnancy, when the gestational sac is of moderate size and less damaging to the body, but this is only judged by the growth rate of a normal gestational sac, and an ultrasound examination at the hospital is also needed, determined by the size of the gestational sac. If the gestational sac is small, less than 1cm, you will need to wait another week for another ultrasound evaluation. If it is more than 1cm, abortion can be done. Before the operation, blood tests are needed for routine blood tests, blood type, coagulation quadruple test, screening for infectious diseases, and examination of vaginal secretions, and the operation can be performed if all the indicators are qualified. If there is any abnormality, it also needs to be treated by the doctor for the symptoms and adjusted before the operation.