The clinical manifestations of the prostate are mainly two aspects: First, the bladder irritation, such as urinary frequency, urgency, nocturia and urge urinary incontinence; On the other hand, the performance of the prostate obstruction caused by urinary obstruction symptoms, such as dysuria. Urinary frequency is an early sign of prostate hyperplasia; especially nocturia increases. The hazards are 1. Urinary in the bladder can not empty, deposition of urine prone to infection. 2. The outflow of urine is blocked and the pressure in the bladder increases, affecting the kidneys and ureters so as to lead to acute pyelonephritis. 3. Severe prostatic...