Prevention of urethral stricture after prostate surgery requires regular urethral dilatation, drinking more water, eating more fresh fruits and vegetables, taking oral antibiotics if necessary, and avoiding increasing abdominal pressure or lifting heavy objects. Prostate hyperplasia surgery is mainly minimally invasive, with electroplasma plasma cutting or laser resection, after surgery to prevent infection, bleeding and urethral stenosis, observe the urination situation, if there is a sudden appearance of blood in the urine, pain in the urine, we should suspect that urethral stenosis occurs, and the need for regular dilatation of the urethra, that is to say, the line of excision of the scar surgery. At the same time, drink more water to promote urination, eat more fruits and vegetables, to avoid increased abdominal pressure. If there is pain and blood in the urine after surgery, it may be due to urethral stenosis, and it is recommended to consult a doctor for relevant treatment in time.