Men with painful urination need to be aware of the possibility of urethritis, and in particular need to be aware of the presence of atopic urethritis. There are many factors that generally cause atopic urethritis, pathogenic bacterial infections such as diplococcus gonorrhea, trichomonas, candida, chlamydia, mycoplasma, viruses and so on. The urethra itself has obstruction or deformity, such as prepuce, urethral stenosis, urethral stone, urethral tumor, urethral foreign body. Chronic prostatitis and other clinical symptoms are manifested in the acute stage of mucous or purulent secretions, overflow from the urethral orifice, burning sensation in the urethra during urination, pain, urinary urgency, urinary frequency and so on. In the chronic phase, urinary pain is reduced, and the urethral discharge may be more or less. There may be a little secretion from the urethra in the morning, and there may be divergence when urinating, and retrograde infection is easy to occur if treatment is not timely.