Male urinary diversion may be caused by physiological factors, acute urethritis, urethral stones, prostatitis and other factors. 1. physiological factors: hold urine for too long, after sex, etc., in the urination, may make the urethral pattern of a transient change, there will be a physiological urinary divergence, no other clinical symptoms, can be restored to normal. 2. Acute urethritis: may be related to unclean sex and do not pay attention to the lower body hygiene, can make the urethra localized congestion and edema, impede the discharge of urine, will cause urinary divergence, accompanied by urinary pain, urinary frequency, urinary urgency and other symptoms. 3. Urethral stones: usually secondary to bladder stones, when the stone is located in the anterior urethra, it will cause urinary diversion, accompanied by urinary difficulties, urinary pain, hematuria and other symptoms. 4. Prostatitis: it may be related to not paying attention to physiological hygiene, frequent sex and other factors, can make the prostate gland localized enlargement, the urethra caused by the pressure, will cause urinary diversion, also accompanied by frequent urination, urination, urinary dribbling and other symptoms. Men who urinate and have other obvious discomforts should be alerted to disease factors, and it is recommended that they seek medical examination and treatment.