Indwellin gureteral stents have been used increasingly in urological practice, but they may induce urinary tract infection and encrustation. A case of bladder and ureteral stones from use of an indwelling ureteral stent over 16 months is reported. There was a string of beaded calcifications alone the ureteral stent. The patient underwent cystolithotripsy and endoscopic removal of the double J stent smoothly. The problem and management of indwelling ureteral stents is discussed.