How many days pregnant can do abortion, related to the specific way of abortion, need to be analyzed on a case-by-case basis. Abortion is divided into two kinds of drug abortion and artificial surgical abortion. If you usually have regular menstruation, once every 30 days, and the ultrasound suggests intrauterine pregnancy around 45-50 days after menopause, this is the best time for abortion. At this time, the placenta and the uterine wall are not yet very close, the uterus is not very large, the myometrium is relatively thick, the abortion surgery bleeding is less, the operation is more complete, the postoperative recovery is faster, and the damage to the organism is less. If the number of days of pregnancy is too small, the gestational sac in the uterus is smaller, and it is easy for the abortion to miss suction; and if the number of days of pregnancy is too large, it is easy to bleed more during the operation, and it is also possible that suction is incomplete and leakage of suction may occur. If a medication abortion is used, i.e., utilizing two medications, Mifepristone and Misoprostol, the best time is within 49 days of pregnancy. Before the abortion, you need to go to the gynecology department of a regular hospital, do ultrasound to determine the size and location of the pregnancy sac, and exclude the possibility of ectopic pregnancy, and determine the intrauterine pregnancy before the abortion.