The Urethral mouth acne, then this may be the reason: 1, condyloma acuminata, is through unclean sexual contact, infected with human papillomavirus, infection can appear after the urethra and other parts of the small sarcoma, the surface is not smooth, cauliflower-shaped, accompanied by bleeding, accompanied by local pain, volume size number can gradually increase, increase. Local excision and pathological examination is required to confirm the diagnosis, and further antiviral treatment is needed. This disease is contagious and can be transmitted through sexual contact, and sexual intercourse should be avoided during treatment. 2. Urethral cysts, which appear as smooth protrusions with clear, bright herpes, do not change in size for a long time or can grow slowly, with no local discharge and no pain, are a benign lesion, and if the volume increases and affects urination, they need to be treated with local excision, which does not have Infectious.