Extracorporeal Shock Wave Lithotripsy is to locate the stone by x-ray or ultrasound, and then act on the stone after focusing with high-energy shock waves to crack the stone until it is crushed into fine sand, which is discharged out of the body with the urine. It is mainly suitable for kidney stones with a diameter of less than two centimeters and stones in the upper part of the ureter. The success rate of treatment for stones in the middle and lower ureter is lower than that of ureteroscopic tube removal. The lithotripsy effect of extracorporeal shock wave lithotripsy is related to the location of the stone, size, nature, and whether it is cantonized, etc. Kidney stones that are relatively large and do not have hydronephrosis often require multiple lithotripsy sessions because there is no room for diffusion of the stone, which makes it less effective. Cystine and calcium oxalate stones are hard and not easy to crush. Ureteral stones are also difficult to crush if they stay for a long time, combined with muscle or when stone cantonization occurs. Contraindications to extracorporeal shock wave lithotripsy are urinary tract obstruction distal to the stone, bleeding disorders in pregnancy, severe cardiovascular disease, aortic or renal aneurysm uncontrolled urinary tract infection. People who are overly obese, with high kidney position, severe deformity of bone and joint, and unclear stone localization are not suitable for this method due to technical reasons.