Kidney stones may not be urinated out for a short time after extracorporeal shock wave lithotripsy. 1, because if the stones are hard, it is possible that the stones are not broken by extracorporeal shock wave lithotripsy, so the stones will not be eliminated at this time, so you need to choose the second or third extracorporeal shock wave lithotripsy according to the examination results, and then drink more water and urinate more after the stones are broken as much as possible. If there is chronic infection of ureter or ureteral stenosis, even if the stone is broken, it cannot be discharged into the bladder through the stenosis of ureter. In this case, it is necessary to cooperate with other treatments, such as ureteral dilatation or giving ureteral stent tube for drainage, to promote the elimination of stones as soon as possible; 3. Kidney stones have been crushed, but in the process of elimination completely block the urethra, it can cause the patient to be unable to urinate and feel unable to urinate. In this case, it is necessary to go to the hospital for urethroscopic examination to clarify the location and size of the stone, and then remove the stone under the urethroscope to resume normal urination.