When there is a threatened miscarriage and the miscarriage is not complete, the treatment method needs to be determined based on the size of the residual tissue. It is recommended to first go to the hospital for an ultrasound to evaluate the amount of residual tissue in the uterus. If the residual tissue is relatively small, it can generally be treated with oral medications that promote blood circulation and remove blood stasis, which helps the uterus contract and aids in the expulsion of the remaining tissue. However, if the residual tissue is large and medication is ineffective, a repeat uterine curettage may be necessary. Therefore, when there is residual tissue in the uterine cavity, it must be dealt with promptly, otherwise it can lead to repeated vaginal bleeding, decrease the body's resistance, and increase the risk of anemia and infections.