Surgical method: Utilizing the naturally existing human cavity of the urethra, bladder and ureter of the human urinary system, the ureteroscope is used to enter the bladder retrograde from the urethra without incision, and the ureteroscope is inserted gently into the ureteral cavity through the ureteral opening on the side of the disease, and after the stone is found in the ureter, the holmium laser fiber is introduced and the energy of the holmium laser is used to crush the stone. Advantages: (1) Holmium laser can crush ureteral stones of various compositions with small particles, which can be easily discharged, thus improving the success rate of stone crushing and stone removal. (2) Holmium laser has the functions of cutting, vaporization and hemostasis. For the distal ureteral stenosis or inflammatory polyp encapsulation that hinder stone discharge, it can be treated with holmium laser during lithotripsy to make the lumen unobstructed and more conducive to stone discharge. (3) Holmium laser has a shallow penetration depth of 0.4mm, so it is safe and can cause little damage to the surrounding tissues when lithotripsy is performed. (4) Holmium laser lithotripsy compares with pneumatic ballistic lithotripsy: pneumatic ballistic lithotripsy has a higher impact on the stone, and it is easy to make the stone move up and wash back into the kidney. Holmium laser lithotripsy has less impact on stones, and stones rarely move during lithotripsy, so the recoil rate is low. (5) Less trauma, faster recovery, less pain and shorter hospital stay. Indications for surgery: (1) Middle and lower ureteral stones. (2) Upper ureteral stones after failure of extracorporeal lithotripsy. (3) “Stone street” after extracorporeal lithotripsy. (4) Stones complicated by suspected uroepithelial tumor. (5) Ureteral stones with negative X-rays. (6) Embedded stones with long residence time and difficulty in extracorporeal lithotripsy. (7) Ureteral stones with combined ureteral strictures and inflammatory polyps.