Urethral pain after wet dream may be caused by urethritis, urethral stone, glans mucous membrane damage and other reasons. 1. Urethritis: mainly due to urethral infection caused by bacteria, viruses and other pathogenic bacteria. Due to the stimulation of inflammation, patients may experience pain in the urethra and increased secretion after wet dream. 2. Urethral stones: mainly caused by metabolic abnormalities, kidney stones and other reasons. When the upper urinary tract stones embedded in the urethra, the stones may cut through the mucous membrane, the patient may suddenly feel intense pain in the perineum and painful urination, often radiating to the head of the penis, which may appear after the phenomenon of urethral pain after sleeplessness. 3. Damage to the mucous membrane of the glans: the mucous membrane of the glans may be damaged due to the tightness of the underwear, collision, blows and other reasons, so that the urethra may appear painful after sleepless nights. The above symptoms may also be caused by other factors, it is recommended that patients go to the regular hospital in a timely manner, follow the doctor’s instructions for treatment, to avoid delaying the condition.