Incomplete abortion blood may be the following colors: 1, bright red, often incomplete abortion tissue and the uterine wall between a small amount of stripping, will lead to local active bleeding, so the bleeding tends to be relatively fresh, and at the same time may be accompanied by pain in the lower abdomen. 2, the appearance of dark red blood or the color of the blood, mainly because of incomplete abortion after the uterus there is residual tissue, resulting in infection in the uterine cavity will appear darker blood. 3, there will be pus blood, in the clinic is a more serious infection, and this discharge is often accompanied by a strong odor. Infection will occur before the appearance of darker blood. 3, there will be pus and blood, in the clinic is the infection is more serious, and this discharge will often be accompanied by a strong odor. Once an incomplete abortion is detected, clinical treatment should be given accordingly. If there are small residual tissues, no stripping with the uterine wall occurs, and there are no corresponding clinical symptoms, treatment can be expected and observation can be given. If there is relatively large residual tissue with vaginal bleeding, prompt evacuation is recommended.