Ureteral limpet extraction is relatively smooth and does not have serious sequelae. Infection or damage to the ureter after the procedure may cause sequelae, such as ureteral stenosis, which may cause secondary hydronephrosis. Ureteral lithotripsy is relatively smooth and with good postoperative care, there are usually no serious sequelae. If it is not operated properly during the operation, or if it is not cared for properly after the operation, it may lead to infection after the operation, or it may cause damage to the ureter, which may easily cause ureteral stenosis. When the ureteral stenosis is more obvious, it may lead to secondary hydronephrosis, which is easy to cause irreversible damage to the kidney if not treated in time. After ureteral flexible mirror stone removal surgery, must do a good job in all aspects of care, and regular medical review to prevent abnormalities.