Ureteral stenosis is a common disease that can lead to hydronephrosis, and prolonged hydronephrosis can lead to kidney damage and even complete kidney atrophy. Therefore, once ureteral stenosis or hydronephrosis occurs, the cause should be immediately identified and treated. In this case, due to multiple Holmium laser lithotripsy in the ureter, the ureter was damaged and prolonged ureteral stenosis and hydronephrosis led to right kidney atrophy. For ureteral stenosis, the common treatment is to place a ureteral stent for support. In this case, a “metal ureteral stent” was placed, which is the longest ureteral stent that can be left in place in China.