Pain after lithotripsy does not indicate that the stone is moving downward. In addition to the expulsion of the stone, this situation may also be due to postoperative infection and stone retention. 1. Stone discharge: after lithotripsy, there may be slight pain in the process of stone discharge, because the discharge of the stone will constitute a certain stimulation of the ureter, and there will be an irritating reaction for a short period of time, usually after the stone is completely discharged, the symptoms will be gradually reduced. 2. Postoperative infection: the lack of good local care after surgery, resulting in secondary infection, stimulated by inflammation, can also cause mild pain. 3. Stones remaining: If the stones are large and only one surgery is done, it is easy to cause the stones to remain and can not be completely discharged from the body. When the stone falls into the ureter or other parts of the body, it will cause pain. If you have pain after lithotripsy, it is recommended to go to the hospital to do imaging tests to find out whether there are stones left behind and whether there is any postoperative infection, and then according to the diagnostic results of targeted treatment.