Normal prostate, the average size of about 4cm x 3cm x 2cm, the appearance of the inverted chestnut shape, if the size of more than this size is belong to the prostate hyperplasia. Prostatic hyperplasia is the most common disease causing urinary disorders in older men, the cause of which is still not completely clear, and currently there are mainly androgens and their receptors, inflammatory factors and other doctrines. Prostatic hyperplasia mainly occurs in the periurethral shaped zone of the prostate, and most of the hyperplastic tissues are in the form of multiple nodules and gradually increase in size. Prostatic hyperplasia symptoms are mild, do not affect the life and sleep, no need to treat and wait for observation; if the impact of urination, you can take tamsulosin, finasteride and other drugs for treatment; if the symptoms are serious, you can take surgical treatment. It is recommended to go to the hospital for examination first, and the drugs need to be used under the guidance of professional doctors.