Kidney stone lithotripsy is usually used when the stone is too big to be discharged by itself, or when the stone is not big but in a special location and cannot be discharged easily, lithotripsy is also needed. After lithotripsy, the stone is crushed by ultrasound, and after crushing, the stone can be expelled from the body on its own, because after lithotripsy, some stones will be painful in the process of expulsion through the urethra. In addition, some larger stones may not pass through the urethra after lithotripsy, which may also cause pain. It is recommended to drink as much water as possible after lithotripsy, more jumping to promote the discharge of stones, you can also take medication to dilate the urethra, urethra dilation is conducive to the discharge of broken stones will not be painful after the body. However, it is still recommended that the discharged stone be tested to see what the composition of the stone is, in order to prepare for the reoccurrence of the stone in the future.