Posterior urethral mucosal congestion belongs to the manifestation of urinary tract infections, such as urethritis, which is usually not cancerous. Posterior urethral mucosal congestion may be caused by Neisseria gonorrhea, Chlamydia trachomatis, Mycoplasma, Trichomonas, herpes simplex virus and other pathogens infection, the common disease is urethritis, the patient may also have urethral pain, urethral urethral urethral urethral redness, urethral discharge and other symptoms. Patients can follow the doctor’s instructions to use antibiotics, such as cefixime, levofloxacin, erythromycin, etc. for treatment, most patients have a good prognosis. Common infectious diseases of urinary tract usually do not lead to cancer. Cancer is caused by physical, chemical, viral and other oncogenic factors that activate the oncogenic genes, thus leading to cancer. It is recommended that patients strictly follow the doctor’s prescription of medication, actively cooperate with the doctor’s treatment, pay attention to personal hygiene in life, keep clean and dry around the urethral orifice, and at the same time, patients should also pay attention to the monitoring of the affected area, once the symptoms worsened or other uncomfortable reactions, they should go to the urology department in time to consult the doctor.