The accumulation of blood in the uterine cavity is common after uterine operations and usually disappears within 1-2 weeks in most patients after aggressive symptomatic treatment and anti-inflammatory therapy. Usually after uterine operations, such as abortion, curettage, diagnostic curettage, poor uterine regeneration can cause accumulation of blood in the uterine cavity. In most patients, the accumulation of blood can be completely eliminated after about 5-7 days by taking oral medications to activate blood circulation and remove blood stasis. In addition, if the infection is caused by post-uterine operation, anti-infection treatment should be given first. After the inflammation is controlled, drugs to promote uterine contraction and drain blood stasis are given, and it takes about 10 days for most patients to completely clear the blood accumulation. In conclusion, patients with uterine effusion after uterine operation should be treated with targeted treatment under the guidance of a professional doctor. Also, during the treatment period, pay attention to a light diet, take rest, maintain cleanliness and hygiene to avoid infection, and follow up with the doctor as required.