Male urinary tract infection may be caused by poor hygiene, unclean sex, and secondary factors. 1. Poor hygiene: men do not wash their lower body for a long time, may make the urethra area bacterial damage, into the urethra, it is easy to cause urethritis and other urinary tract infection disease. 2. unclean sex: men have unclean sex, sexual partners have some gynecological diseases, it is easy to induce urinary tract infections after sex, such as gonococcal urethritis, non-gonococcal urethritis. 3. secondary factors: for example, men suffering from urethral stenosis, urethral stones, glans and other lesions, not timely treatment, may induce urinary tract infections, such as urethritis, cystitis and so on. After the symptoms of urinary tract infection, men should seek medical examination and treatment in time to avoid causing serious complications.