Generally speaking, older men over 50 years of age should consider the possibility of prostate enlargement when one of the following symptoms occurs: 1, frequent urination: is the increase in the number of urination, especially the increase in the number of night urination, more than 2 to 3 times, is often an early symptom of prostate enlargement. 2, weakness of urination, thin urine line and urine dripping: due to the obstruction of the enlarged prostate and the compression of the urethra, patients have to use more force to overcome resistance to urination, so that weakness of urination, thin urine line, the range is not far; with the development of the disease, there may also be interruption of urination, dripping after urination and other symptoms. 3, hematuria: hyperplastic prostate tissue congestion, the surface is rich in blood vessels, easy to rupture caused by hematuria. 4, urinary retention: patients with more severe prostate enlargement, obstruction can be severe due to cold, drinking alcohol, holding urine for too long or infection and other reasons that lead to the inability to urinate. 5, nocturnal incontinence: after sleeping, a large amount of urine accumulates in the bladder, and the pressure in the bladder gradually rises and overflows on its own after exceeding the resistance of the urethral canal lumen, causing incontinence. 6, painful urination and urinary urgency: when the prostate gland is enlarged, because the urine in the bladder is not clean, it is easy to cause bacterial infection, pain when urinating, as soon as there is the urge to urinate can not wait to urinate. 7, uremia: pelvic fluid and uremia prostate hyperplasia heavier, longer, due to the bladder and upper urinary tract compensatory insufficiency, can lead to ureteral and renal pelvic fluid. Continued development can cause renal insufficiency – uremia. The symptoms include loss of appetite, nausea, vomiting, and anemia. Because such symptoms are relatively insidious at first and lack specificity, they can easily be misdiagnosed as gastrointestinal diseases. In addition, due to prostate enlargement causing patients to have difficulty urinating due to increased abdominal pressure, it can also cause or aggravate diseases such as hemorrhoids and hernias.