Performing pelvic fluid extraction is harmful and can have a major impact on the body. For the problem of bloody exudation of pelvic fluid, it is very harmful to treat the problem only with extraction surgery, because the extraction of fluid only temporarily reduces the exudation of pelvic fluid, basically does not treat the root cause of the disease, and can lead to other complication reactions. Ligation of the bleeding point is recommended to cure the disease fundamentally. If the pelvic effusion is purulent, when the purulent secretion is withdrawn from the posterior fornix, the pus will be brought into the blood circulation, causing sepsis which is very harmful and even life-threatening. If it is inflammatory pelvic effusion, it is also not suitable to use this method of treatment, because it can only reduce pelvic effusion, but can not completely eliminate the inflammation, and after a period of time the inflammation seeps out and causes pelvic effusion.