Possible causes of hematuria after lithotripsy: 1. The energy of extracorporeal shock wave lithotripsy causes microscopic damage to the urinary tract, which can cause mucosal or parenchymal hemorrhage, such as repeated extracorporeal shock wave lithotripsy of the kidney, which can cause minor contusions of the kidney and can result in hematuria. 2. The stone can cause local mucosal rupture and bleeding in the process of lithotripsy. 3. After lithotripsy, the stone can cause local damage to the mucosa and hematuria in the process of stone discharge. This is usually related to local mucosal bleeding caused by mucosal damage during exercise.