Prostatic hyperplasia PSA, that is, elevated prostate-specific antigen, is generally normal. Prostatic hyperplasia of the population, about 14% visible in the serum PSA level is elevated, generally 4 ~ 10μg / L, but the emergence of PSA elevation, must be ruled out the possibility of prostate cancer, if the ratio of free PSA and serum total PSA concentration is less than 0.1, may be prostate cancer. When prostatitis is present, drugs such as terazosin and doxazosin can often be taken under medical supervision. Benign prostatic hyperplasia is one of the most common diseases in elderly men over 50 years old. In daily life, it is necessary to quit smoking and drinking, and reduce fluid intake at night to prevent urinary retention. When prostate enlargement occurs, patients need to consult the doctor for examination and early treatment.