After kidney stone surgery, stent tubes are routinely placed, and the stent tubes are removed with the help of cystoscopy, which may be a little painful, and local anesthesia will be given to alleviate the pain during the surgery. Kidney stone surgery is mainly minimally invasive surgery, ureteroscopy needs to be routinely placed after the stent tube, to prevent ureteral stenosis, conducive to the discharge of stones and drainage of hydronephrosis, usually one month after the operation can be removed in the hospital; if the existence of ureteral stenosis, the stent tube may be retained for a longer period of time, usually need about three months. The ureteral stent tube is removed through the urethra via cystoscopy, which may be more painful for male patients, while female patients are better, and can be removed after local anesthesia, which can minimize the pain.