If the blood clots are difficult to discharge after abortion, and affect the uterine contraction leading to irregular vaginal bleeding, it is recommended to do the purging surgery, after the blood clots are cleared out at the same time in the cervix injection of oxytocin to make the uterus contract, leading to the closure of the blood sinuses, to reduce the uterine cavity to reappear and lead to the discharge of the blood clots, the appropriate medication should be given to the treatment of the postoperative period, such as can take misoprostol to promote uterine contraction or taking In addition, the position of the uterus may be abnormal, resulting in the blood clots in the uterine cavity not being able to be discharged, and need to be removed surgically in order to restore the uterus to normal.