Inflammation of the male urethra may be related to unclean sexual intercourse, medical infection, urethral obstruction, infection of neighboring organs and other reasons. 1. unclean sexual intercourse: during sexual intercourse, if you don’t do a good job of cleaning your private parts, it can lead to pathogenic bacteria attacking the urethra, causing inflammation of the urethra. 2. Medical infection: In the placement of urinary catheter, cystoscopy and other operations may lead to urethral mucosal injury, may cause urethral infection. 3. Urethral obstruction: such as urethral stenosis, circumcision stenosis, etc. can lead to poor urination, urine accumulation in the urethra, thus secondary urethral inflammation. 4. Inflammation of neighboring organs: such as prostatitis can spread to the urethra, urethral inflammation phenomenon. It is recommended that men with urethral inflammation go to a regular hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.