Complications of ovarian cyst torsion are as follows: 1, torsion of the relatively long time will be localized necrosis, affecting the neighboring organs, in the operation will be relative to the neighboring organs for the corresponding treatment. 2, torsion of the case will form part of the thrombus, if the operation is not handled correctly resulting in the dislodgement of the thrombus, which may lead to serious consequences. If the thrombus is dislodged into the pulmonary artery, it will cause pulmonary embolism, which will lead to respiratory failure and may endanger the patient’s life. If the thrombus to the lower extremities, will lead to lower extremity venous thrombosis and local edema, ovarian cyst torsion of the complications or more.