Advantages of ureteroscopy: Less painful: Ureteroscopy is a high precision instrument inserted into the bladder through the urethra, and stones are found by using lithotripter or lithotripter to break the stones and take them out, avoiding the pain of open surgery. Safer: It only works on ureteral stones and does not produce thermal effect on the surrounding tissues, so there will not be any loss to the surrounding tissues in the process of stone crushing. There is also no risk of perforation, bleeding and some complications associated with traditional surgery. No recurrence: Ureteroscopic lithotripsy is more efficient compared to traditional lithotripsy methods. It is done by clearly observing the lesions in the ureteral lumen to determine the location and shape of the stones, and treats ureteral stones more thoroughly without recurrence. Is ureteroscopic stone extraction procedure good? This method of treating ureteral stones is fast recovery: the simple operation time of ureteral stone extraction takes only 30-50 minutes, and the patient recovers quickly after the operation and has a short hospital stay. 2: Ureteroscopic lithotripsy is mainly suitable for the following types of patients: 1) treatment of lower and middle ureteral stones; 2) treatment of ureteral stones that are not suitable for extracorporeal shock wave lithotripsy or failed extracorporeal shock wave lithotripsy; 3) as an adjunct to extracorporeal shock wave lithotripsy, it is used to deal with the stone street after lithotripsy or larger stones that stay in the ureter, or to improve the success rate of lithotripsy by pushing the stones into the renal pelvis with ureteroscope before lithotripsy. The ureteroscope is used to push the stone into the renal pelvis before lithotripsy to improve the success rate.