Male urethra anatomy is different from female, male urethra is long and narrow with bends; female urethra is short, straight and wide without narrowing and bends. 1. Male urethra: located below the bladder, connecting the bladder and the urethral orifice, the tube is long and narrow, there are two curves such as the pubic symphysis and pubic symphysis anterior curvature, and its function is to discharge urine and spermatozoa. 2. Female urethra: It is located above the vaginal opening, close to the anterior wall of the vagina, connecting the bladder and the external opening of the urethra. The tube is short, straight and wide, with no narrowing or curvature, and its function is only to urinate. Whether it is the male urethra or the female urethra, it is susceptible to pathogen infection, usually should pay attention to keep the pubic area clean, to avoid pathogen invasion of the urethra caused by urethritis, cystitis, prostatitis, vaginitis, cervicitis, and other reproductive tract and upstream infections. Patients with urethral and other urological diseases should go to the regular hospital in time, under the guidance of the doctor, to identify the causes, for treatment.