Prostatic hyperplasia urination difficulty now appear stool also have obstruction pass, often is related to urinary tract obstruction, rectal compression and other factors. 1. urinary tract obstruction: the prostate gland encircles the beginning of the urethra and is connected to the bladder, so it has a controlling effect on urination. When the prostate gland enlarges, there will be pressure on the urethra, frequent urination, urgency, difficulty in urination, increased nocturia and other symptoms, and even acute urinary retention and secondary urinary tract infections. 2. Rectal compression: when suffering from prostate hyperplasia, due to the prostate and rectum adjacent to the hyperplasia gland will also compress the rectum, causing patients to have difficulty in defecation, resulting in the phenomenon of constipation. Constipation will also press on the prostate gland, causing the patient to have difficulty in urinating. For patients suffering from prostate hyperplasia, they should seek timely consultation and active treatment.