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ve. To investigate the impact of two different ureteral stents on the quality of life and erectile function of young and middle-aged men after ureteral laser lithotripsy. A total of 118 male patients aged 22-45 years underwent ureteral laser lithotripsy followed by indwelling of the traditional double-J stent (the DJS group, n = 6 or Polaris loop stent (the PLS group, n = 58). We obtained the general information, intra- and post-operative clinical data, and scores on QOL, IPSS, Visual Analogue Scale (VAS) and IIEF, and compared them