Two extracorporeal shock wave lithotripsy sessions at an interval of approximately 7-10 days is appropriate. If the time is too short, repeatedly receiving more than two times of extracorporeal shock wave lithotripsy in the same area will lead to local mucosal breakage, which will result in short-term visual hematuria or increased local pain symptoms, but in the long run may cause local scar formation or cause fibrosis of the ureter and kidney, resulting in serious complications such as local stenosis or renal insufficiency, so the interval should be at least one week before performing the second However, for different parts of the body, such as the left or the right side, a slightly shorter interval can be considered, but it should be decided according to the patient’s organ function and physical characteristics. After extracorporeal shock wave lithotripsy, there will be edematous changes in the tissues in the short term, and the edema can gradually subside after 3-4 days of rest, and can reach the normal healing state after a week of rest.