Ureteral stents are still narrowed after the removal of ureteral stents can be treated with ureteral reconstruction, stent re-implantation, ureteral dilatation and other methods. 1. Ureteral reconstruction refers to the surgery of reconstructing the urethra through artificial ureter or partial ureteral resection anastomosis, which can effectively relieve the symptoms of ureteral stenosis, and at the same time can prevent physiological restenosis to some extent. 2. Ureteral stents can be removed and then re-stented, as re-stenting may be due to insufficient time spent in the previous stent. 3. Ureteral dilatation can be performed in the event of a stricture, which is an interventional procedure to dilate the ureter, mainly through balloon dilatation and other methods, which can effectively improve the symptoms of dysuria caused by ureteral stricture. Ureteral stents can be removed after restenosis can be treated in a variety of ways, such as nephrostomy, etc., according to the patient’s own wishes and condition to judge.