Interrupted urine flow is a sudden interruption of the urine flow during urination, sometimes accompanied by severe pain in the head of the penis. The most common cause is that in prostatic hyperplasia the patient must increase the strength of the abdominal muscles in order to pass the urine. In advanced stages of the disease, the urine cannot be drained in one go, but requires another breath to continue urinating, which manifests as an interruption of the urine flow. Patients with bladder stones, bladder tumors, foreign bodies in the bladder, ureteral cysts and other diseases can continue to urinate after the stones, tumors or ureteral cyst tissues, foreign bodies, etc. can move position with the urine stream during urination. In the process of urination of patients with huge bladder diverticula and vesicoureteral reflux combined with ureteral effusion, although most of the urine has been excreted, there is still a considerable portion of urine in the diverticula or ureter. When urination is finished, this part of urine soon enters the bladder again and produces the urge to urinate, and urinates again. This condition is called two-stage urination, rather than interruption of urine flow. The most common reason for this is that in prostatic hyperplasia the patient must pass through increased strength of the abdominal muscles to pass the urine. In the advanced stages of the disease, the urine cannot be emptied in one go, but requires another breath to continue urinating, which manifests as an interruption of the urine stream. Patients with bladder stones, bladder tumors, foreign bodies in the bladder, ureteral cysts and other diseases can continue to urinate after the stones, tumors or ureteral cyst tissues, foreign bodies, etc. can move position with the urine stream during urination. 1, cystoscopy The distance from the seminal frenulum to the neck of the bladder is about 2cm in normal people, and the neck is concave with a flat posterior lip. In the case of prostatic hyperplasia, the posterior urethra is prolonged and the shape of the neck changes with the degree of hyperplasia of each lobe, from the disappearance of the concave surface to the protrusion of the glandular lobe. The urethra becomes fissured by pressure. The base of the bladder is sunken and the ureteral orifice spacing and distance from the bladder neck are widened. The interureteral ridge may be hypertrophic and the bladder wall has trabeculae, small rooms or diverticulae formation. 2.Other Magnetic resonance imaging has no special value for the diagnosis of prostatic hyperplasia, but it can assist in identifying early prostate cancer.