Pelvic vein thrombosis can be caused by bacterial infections, inflammation, etc. It is most common after pelvic surgery, infection, postpartum and so on. Pelvic vein thrombosis often occurs secondary to pelvic surgery, as well as postpartum, or miscarriage, etc. If the symptoms of infection occur due to improper care, the toxins of bacteria can damage the blood vessel wall resulting in damage to the endothelial cells to activate the coagulation system, which results in the formation of a thrombus. Usually manifested as localized pain, high fever, and impaired blood circulation, patients with symptoms need immediate medical attention and active treatment. Otherwise, thrombus dislodgement can appear fatal non Patients at high risk of developing pelvic vein thrombosis, such as those after pelvic surgery and postpartum, need to take standardized care, get out of bed as soon as possible, and seek immediate medical attention and improve relevant examinations for early detection and treatment.