Male penis has an odor fishy smell may be due to glansitis, scrotal eczema, urethritis and other factors. 1. glans: if men often use soap or condoms, the glans area for stimulation, as well as long foreskin cleaning is not in place, so that the accumulation of foreskin scale, etc., may lead to inflammatory lesions of the glans, thus causing glans pain, oozing, fishy odor and other discomforts. 2. Scrotal eczema: If you are often overstressed, have big mood swings, and wear non-breathable underwear for long periods of time sitting and standing at work, it may lead to eczema-like changes in the scrotum; therefore, it will cause itching, swelling, redness, vesiculation of scrotal skin, as well as a fishy odor and other discomforts. 3. Urethritis: usually due to gonococcus invasion of the male anterior urethra, through the surface of the bacterial hairs adhering to the surface of the urethra bacterial surface, thus appearing inflammatory lesions of the urethra; mainly will cause purulent secretion, white thin liquid, urinary frequency and other discomforts. Male penis odor fishy smell may also be caused by other factors, it is recommended that patients go to the regular hospital in time to consult the urology department, under the guidance of the doctor to clarify the cause of the treatment, and strive for early recovery.