When vaginal bleeding occurs again half a month after the abortion procedure, there are two main possibilities to consider: first, bleeding related to the abortion, such as bleeding caused by uterine residue, poor uterine recovery, and uterine infection. If the patient’s bleeding is accompanied by abdominal pain and the bleeding has a foul odor, consider the possibility of a uterine infection. If the patient’s bleeding is accompanied by abdominal tenderness, but not pain, and the bleeding does not have a particular odor, this situation should be considered as poor uterine regeneration and residual uterine cavity. Differential diagnosis needs to be made through gynecological ultrasound, blood routine and gynecological internal examination and other relevant examinations. Second, to consider ovulation bleeding, half a month after the abortion surgery is exactly in the ovulation period. If the patient only has a small amount of bleeding, 3-4 days can be cleaned up by themselves, no special discomfort, you can not do any treatment.