Male genital odor, then the possible causes: first, do not maintain local personal hygiene, or the existence of a long foreskin, prepuce, urine residue in the foreskin when urinating, can cause genital odor, need to do a good job of personal hygiene, regular cleaning, especially after urination need to wipe the urine stains in a timely manner, and do every 3-4 days to wash the external genitalia, can reduce the local odor. Second, when suffering from glansitis, circumcision, can appear local odor, because the bacterial reproduction and purulent secretions, so it will cause the corresponding fishy smell. This is a good way to get the most out of your life. The third, suffering from sexually transmitted diseases, can also appear genital odor, such as gonorrhea, non-gonococcal urethritis, etc., can be discharged from the urethra a large amount of pus secretion in the glans or foreskin above, and cause fishy smell, need to carry out relevant pathogenic detection to give symptomatic treatment, the treatment period need to abstain from sex.