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Objective:To investigate the changes in sexual function and urinary function following rectal cancer resection in male patients.Methods:48 male patients with rectal cancer under 65 years old were included in the study and postoperative sexual function and urinary function were investigated through questionnaires and telephone interviews following resection of rectal cancer and the results were analyzed retrospectively.Results:The overall sexual dysfunction rate was 58.33%.The overall urinary dysfunction rate was 56.25%.No statistically significant differences in the incidences of sexual dysfunction and urinary dysfunction were found in the comparison between participants under 50 and above 50 years old,between those who received Miles operation and Dixons operation,and among those at different tumor stages respectively.Conclusion:The incidences of sexual dysfunction and urinary dysfunction in male patients following resection of rectal cancer are high.The age,ways of surgical management and stages of tumor are not apparently contributed to these complications.