Urethral stricture is a disorder of urination resulting from an abnormally small mechanical lumen in any part of the urethra, which increases resistance in the urethra. It is mostly seen in men. According to the etiology, urethral strictures can be divided into 3 major categories: congenital urethral strictures, inflammatory urethral strictures, and traumatic urethral strictures. Urethral strictures are caused by scar formation due to the replacement of the normal urethral spongiosa by proliferating fibrous tissue, resulting in contracture of the urethra and its surrounding tissues. Symptoms and signs 1. Difficulty in urination: Difficulty in urination is the main symptom of urethral stricture, which can be mild or severe, and is related to the degree of urethral stricture. 2.Bladder irritation symptoms and bladder loss of compensation: manifested as frequent urination, urgent urination and incomplete urination. And gradually appear residual urine, and eventually urinary retention or filling incontinence. Second, treatment methods 1, urethral dilatation: urethral dilatation has a role in the treatment of strictures, and has a therapeutic effect on fibrosis that only invades the epithelium or superficial spongiosa. After dilatation, the stricture area is stretched and massaged to improve local blood flow and promote the softening of scar tissue, which is conducive to the relief of stricture. 2.Intraluminal surgery: Since 1972, urethral scalpel (cold knife) and endoscopic endourethrotomy have been continuously improved by scholars at home and abroad, making the treatment of urethral stricture and atresia significantly more effective and the treatment of choice for urethral stricture. 3.Open urethroplasty: open posterior urethroplasty has a low recurrence rate and is recognized as the best result among open surgeries. 3.Common symptoms Difficulty in urination. At first, it is difficult to urinate, the time to urinate is prolonged, and the urine is bifurcated. Later, the urine line gradually becomes thinner and the projection becomes shorter or even dripping. When the contraction of the detrusor muscle cannot overcome the urethral resistance, the residual urine increases or even overflow incontinence or urinary retention. Urethral stricture is often accompanied by chronic urethritis. In this case, there is often a small amount of purulent discharge from the urethral orifice, mostly found in the morning, and the urethral orifice is closed by 1 or 2 drops of discharge, called “morning drop”. The urethra at the proximal end of the stricture is dilated and prone to recurrent urinary tract infections, periurethral abscesses, urethral fistula, prostatitis and epididymitis due to urine retention and complications of infection. The obstruction then causes pelvic ureteral effusion and recurrent urinary tract infections eventually leading to renal decompensation and even uremia. Fourth, dietary care Eat some potassium-rich food kelp, rice bran and wheat bran, almond fruit, Cheng, raisins, bananas, plums, melon seeds, etc.