Difficulty in urination in young men may be caused by prostate enlargement, urethral stones and urethral cancer. 1. Prostatic hyperplasia: due to prostatic hyperplasia in young men, it will cause urethra or bladder urethral orifice compression, which will lead to high urethral resistance during urination, and then there will be symptoms such as difficulty in urination, frequent urination, and more nocturia. 2. Urethral stones: if the stones of young patients enter into the urethra, it will lead to blockage of the urethra affecting the urine discharge, and then symptoms such as difficulty in urination, painful urination and hematuria will appear. 3. Urethral cancer: if young patients suffer from tumor at bladder, it will cause blockage of urethra, which will lead to the phenomenon of difficulty in urination, and there will be uncomfortable symptoms such as hematuria and pain in urethra. When young people have the symptom of difficulty in urination, it is recommended to go to the hospital in time to find out the cause of the disease and give standardized treatment.