How long after the miscarriage can the vaginal pills be inserted can only be judged according to the bleeding situation. Generally, the bleeding will last for about 7-10 days after the miscarriage, and the vaginal pills can be inserted about half a month after the miscarriage. However, when inserting vaginal pills, it is important to check the discharge to make sure which kind of vaginal inflammation is present before inserting vaginal pills to avoid using the wrong medicine, which can also cause side effects and bleeding. Also, if there is residual tissue or blood in the uterine cavity at the time of review, even if there is no bleeding, vaginal pessary treatment is not recommended because there is a risk of bleeding at any time and the cervical opening is open, which can cause upstream infection and endometritis, tubitis and pelvic inflammatory disease.