Ureteral stone is a common clinical urology disease, caused by kidney stones fall down the ureter, oral medication lithotripsy treatment effect is poor can be taken minimally invasive surgery, minimally invasive surgery for ureteral stone commonly used retrograde ureterorenoscopy and laparoscopic ureteral incision to remove the stone of two kinds of postoperative routine need to stay in the urinary catheter. If the retrograde ureteral flexible surgery after the retention of urinary catheter smooth, the routine situation can be removed one day after the operation. If the patient’s surgery is localized suture or the surgery time is long, urethral injury or ureteral injury is relatively common, the retention time may be extended accordingly, and it is usually removed in 3-4 days. The time to remove the catheter after laparoscopic ureterotomy and stone removal is closely related to the drainage tube and drainage fluid at the ureterotomy and stone removal site. After laparoscopic ureterotomy for stone removal, the ureter is incised using a wire anastomosis, and a small amount of urine leaks out of the anastomosis after the anastomosis, and the procedure will place a routine drain to drain the urine. If the amount of drainage decreases significantly within 1-2 days after surgery, the catheter can be removed.