If you want to abort a breastfeeding pregnancy, you can choose either a medication abortion or an abortion. If the size of the pregnancy sac is within 2 cm, you can first choose a medical abortion and suspend breastfeeding because the uterus is softer during breastfeeding, so if the direct abortion is more risky, the uterus is prone to perforation during the operation, if the medical abortion goes smoothly, you can avoid these adverse effects, and if the medical abortion is incomplete or fails, you can then consider clearing the uterus. However, if the gestational sac is large, more than 2 cm in size, it is usually difficult to have a clean medical abortion, and most of them will have residuals that will eventually need to be removed, so you can directly choose surgical treatment. For breastfeeding pregnancy, if the gestational sac is small and contraindications to medical abortion are excluded, such as no high blood sugar, normal liver function and endocrine function, no asthma, etc., you can choose medical abortion first, and then consider abortion if the medical abortion is unsuccessful, because after all, abortion is risky, and uterine perforation, postoperative uterine adhesions and menstrual disorders are likely to occur during breastfeeding. In short, if the pregnancy during breastfeeding is small and there are no contraindications to medical abortion, you can suspend breastfeeding and choose medical abortion first, and then perform abortion if the medical abortion fails, or if the pregnancy is large, you can directly perform abortion. However, regardless of whether it is a medical abortion or an abortion, there is a possibility that residuals may occur and need to be removed again.