Mycosis fungoides has an effect on the sexual function of men. Mycosis fungoides is a local inflammatory disease caused by infection with mold. It can cause itching, burning sensation and increased local discharge in the glans area, which can generally be cured by antifungal and other treatments, but the disease is prone to recurrence. Male sexual function includes erectile function and ejaculatory function, and mycosis fungoides has no direct effect on these two sexual function problems. However, if mycotic glansitis recurs and remains untreated for a long time, it can have an effect on the frequency of sexual life. Men who pay too much attention to the problem, produce anxiety and depression, may also cause psychological erectile dysfunction.