The principle of ureteroscopic lithotripsy is that a ureteroscope with a diameter of about 3mm is passed through the natural lumen (urethra, ureter) or an artificial fistula to reach the stone site, and Holmium laser lithotripsy rods are used to act directly on the stone. In cases where stones are combined with ureteral stenosis and granulation tissue obstruction, the method can also be used to pass through the stenosis by dilating the stenosis, clamping or electrocuting the granulation tissue in the lumen of the ureter, and then lithotripsy is performed, and the stones are removed by flushing and clamping, etc. Therefore, this method is the most suitable for the treatment of patients whose stones are combined with multiple ureteral calculi, stenosis and obstruction, fluid retention, and renal insufficiency. Ureteroscopic ballistic lithotripsy does not produce thermal effect, no damage to the tissues around the stone; lithotripsy process does not require the use of X-ray localization, no shock wave generation, for the lower ureteral stones and bladder, urethra stone lithotripsy, will not be due to the ray or high-energy wave on the testicles of males, females, the ovary impact. Clinically, ureteroscopy is most widely used in the diagnosis and treatment of ureteral stones, especially for the failure of conservative treatment, extracorporeal shock wave lithotripsy difficulty in localization or failure of treatment, kidney stone lithotripsy after the formation of ureteral “stone street” discharge difficulties. Ureteroscopic stone extraction methods include laser lithotripsy, pneumatic ballistic lithotripsy, clamping method, stone set method. Recently, the ureteroscopic lithotripsy method has been enhanced with the help of stone amputation baskets and stone baskets, which have a higher success rate for high-grade stones that are prone to drifting. Ureteroscopic lithotripsy is also a kind of surgery, just a kind of minimally invasive surgery through the urethra, without opening the abdomen, under the direct vision of endoscopy lithotripsy stone removal. It has the advantages of precise stone extraction, small trauma, high success rate, fewer complications, and faster recovery, and can usually be discharged from the hospital in 1—3 days after the operation.