Ureteral stones are usually caused by kidney stones temporarily obstructed at the narrowing of the ureter during the process of expulsion. If ureteral stones are not expelled, they may gradually grow at the site of retention. Ureteral stones are usually accompanied by significant symptoms such as renal colic, hematuria, and ureteral stones also often cause obstruction and hydronephrosis. Ureteral stones smaller than 6mm can be expelled within 6 weeks in 60% to 80% of cases, so conservative treatment is usually chosen. You can take lithotripsy flush, together with antispasmodic and analgesic drugs, ureteral relaxation drugs, drink a lot of water, and exercise appropriately. Ureteral stones larger than 6 mm have a low rate of stone removal with conservative treatment, especially if they are combined with significant hematuria, significant renal colic and fluid retention. For smaller upper ureteral stones, extracorporeal shock wave lithotripsy can be preferred, but the success rate of single lithotripsy is low and there is a risk of hematuria and kidney injury; for larger or upper ureteral stones that have failed by extracorporeal lithotripsy, percutaneous nephrolithotripsy is feasible, which has a high success rate of removal but is more expensive; for stones in the middle and lower ureter, ureteroscopic laser lithotripsy is preferred. If the ureteral stones are too large and extracorporeal lithotripsy or ureteroscopic treatment fails, laparoscopic incisional lithotripsy or traditional open incisional lithotripsy can also be chosen.