Lumps under the urinary orifice in men can be caused by conditions such as condyloma acuminatum and urethro-penile tumors. 1. Acromegaly: usually due to human papilloma virus infection, with multiple sexual partners, no safety measures of sexual behavior and other factors. The male can occur in the coronary groove, the prepuce tie, the urethra, the glans and other parts of the early manifestation of the reddish small particles, and later will gradually increase in size, papillary, cauliflower, corns and so on. 2. Urethro-penile tumor: the cause of urethral cancer is still unclear, and it is mostly considered to be related to hormone level, chronic stimulation of urethra, proliferative diseases and other factors. Patients often have symptoms such as frequent urination and urgent urination. If the tumor is large, a lump can be touched in urethra. If penile cancer is located near the urethral orifice, it can also be manifested as a lump under the male urethra. Other local benign skin lesions can also cause lumps under the urethra. It is suggested that patients should pay attention to it and actively consult doctor for treatment so as to avoid aggravation of the condition.