The main manifestation of failure to expel after medication abortion is irregular vaginal bleeding, some people show a small amount of continuous vaginal bleeding, some people show abdominal discomfort, and some people show intermittent dripping vaginal bleeding. Therefore, when the bleeding symptoms persist about 2 weeks after the abortion, it is important to consider whether the abortion has failed, in which case an ultrasound examination will be performed to clarify whether there is residual embryonic tissue in the uterus that has not been completely expelled. If the vaginal bleeding persists but there is no abnormal echo in the ultrasound, the contractions can be strengthened to promote uterine regeneration and the bleeding symptoms will disappear after the uterus contracts well. However, if the ultrasound indicates abnormal echoes in the uterine cavity and there is vaginal bleeding, the abortion is almost incomplete, and it is necessary to decide whether to perform a curettage or to continue conservative treatment depending on the size of the abortion residue.