Five days after the abortion, abdominal pain with vaginal bleeding is not normal, especially if the abdominal pain is accompanied by vaginal bleeding or the amount of bleeding is reduced and the amount of bleeding is higher, which is not normal. First, the possibility of uterine cavity infection. Inflammatory infection will lead to local congestion and edema in the uterine cavity and exudation of inflammatory factors, so the patient will have abdominal pain, increased vaginal bleeding and, in individual cases, fever. A clear diagnosis can be made by doing gynecological ultrasound, C-reactive protein, routine blood tests and other related tests. Secondly, it should be considered that it may be caused by uterine cavity residue, and the patient can be clearly diagnosed by doing gynecological ultrasound. Whether the abdominal pain is caused by uterine infection or residue, bleeding needs to be treated actively. If the treatment is not timely on the patient’s body as well as the patient’s re-birth can be affected.