Vitamin D has no direct curative effect on prostate enlargement. Vitamin D belongs to the vitamin class of drugs, clinical mainly used for the prevention and treatment of vitamin D deficiency, such as rickets and so on. Prostatic hyperplasia is a benign lesion, mainly due to the prostate interstitial and glandular components of hyperplasia, anatomical prostate volume becomes larger, resulting in symptoms of urinary obstruction, vitamin D on the prostatic hyperplasia is not a direct role and efficacy. Prostatic hyperplasia symptoms are mild when it does not affect life and sleep, no need for treatment, observation and waiting for regular review can be; symptoms are serious, you can take terazosin, tamsulosin and other drugs, or surgical removal of hyperplasia of the prostate. The body has a disease need to go to the hospital in a timely manner to check, the drug should be used under the guidance of a professional doctor, to avoid their own abuse of drugs.