Urethral stricture is the narrowing of any part of the urethra due to congenital, traumatic, recurrent urethral or glans inflammation, and medically induced injury. Urethral strictures are divided into three categories: congenital urethral strictures, inflammatory urethral strictures and traumatic urethral strictures. Congenital urethral strictures are mainly seen in congenital disorders such as hypospadias and urethral valves. Clinical manifestations of urethral strictures include thinning of the urinary line, bifurcation of urine, difficulty in urination and urinary retention. The main symptom is the difficulty in urination, which starts with a lot of effort and a thin urine line, and gradually becomes worse with increased residual urine and even urinary retention. Over time, this may lead to hydronephrosis, recurrent urinary tract infections, and then uremia due to obstruction. Trauma-induced urethral strictures are often caused by improper early treatment. Currently, treatment is based on urethral dilation and active treatment of infections and other complications caused by urethral strictures. At present, surgical treatment is available for some patients, and the choice of surgical procedure depends on the location and length of the stenosis and the patient’s tolerance. The surgical procedures that are commonly performed today include resection and reanastomosis of the urethral stricture, endourethrotomy, and urethral substitution angioplasty. In summary, urethral stricture is a disease that causes narrowing of the urethra for various reasons, and is relatively complex to treat, so once detected, it should be treated as early as possible to avoid irreversible changes.