Management of ureteral injury: The main principle is to restore the continuity and patency of the ureter and to maximize the protection of renal function. According to the different degrees of ureteral injury, non-invasive ureteral suture, ureteral end-to-end anastomosis, ureteral bladder replantation, ureteral ligation and release, and double “J” tubes are left in place according to the intraoperative situation and removed 3 months after surgery. For patients with small fistulas, such as those with failed double “J” tubes, those who continue to leak after placement of double “J” tubes, those who are too ill for surgical repair, or those who do not undergo second-stage surgery, minimally invasive interventions – -A percutaneous percutaneous ureteroplasty under DSA, a catheter guidewire is replaced through the puncture set, and the catheter guidewire is inserted into the bladder with the cooperation of the catheter. In case of ureteral fistula, the 8.5-12F external drainage tube can be placed in the renal pelvis and the external drainage bag can be used to drain the urine from the affected side to avoid urine erosion of the fistula orifice, which may cause the fistula to fail to heal, and the drainage tube can be removed after 1 month of imaging. Interventional management of ureteral injury is minimally invasive, low cost, avoids the anesthetic risks of surgical treatment, and has good results. More and more clinical cases of ureteral injury are preferring interventional minimally invasive treatment.