Male urinary diversion may be caused by physiological factors, urethritis, prostatitis, prostate hyperplasia, urethral stones, urethral tumors and other factors. 1. Physiological factors: such as holding urine for too long or after sex, when urinating, can lead to physiological urinary divergence, only occasionally, no other abnormal symptoms. 2. Urethritis: may be related to unclean sex, do not pay attention to the lower body hygiene, can lead to urethra congestion and edema, will cause urinary divergence, may also be accompanied by frequent urination, urinary urgency, urinary pain and other symptoms. 3. Prostatitis: may be associated with frequent sex, sedentary, long time drinking, the urethra caused by pressure, can lead to urinary diversion, accompanied by perineal distension and pain, urinary urgency, urinary symptoms such as incomplete. 4. Prostatic hyperplasia: a common disease in older men, after the gland increases in size, it will cause pressure on the urethra, which will lead to urinary divergence, and may be accompanied by urinary difficulties, urinary weakness, and even cause urinary retention. 5. Urethral stones: usually secondary to bladder stones or kidney stones, when the stones block the urethra, affecting the urine discharge, which will lead to urinary diversion, accompanied by pain in urination, dysuria and other symptoms. 6. Urethral tumor: after the tumor increases in size, it can obstruct the urine discharge, which will cause urinary diversion, accompanied by painless hematuria, dysuria and other symptoms. Men with divergent urination and other abnormal symptoms, excluding physiological factors, are recommended to seek medical examination and treatment to avoid delays.