Finasteride tablets can reduce the size of the prostate and slow down the progression of prostatic hyperplasia disease for the treatment of benign prostatic hyperplasia. Finasteride tablets is a 5α reductase inhibitor, belongs to the androgen antagonist, by inhibiting the process of conversion of testosterone to dihydrotestosterone in prostate cells, reducing the level of dihydrotestosterone in the prostate. Dihydrotestosterone is a class of substances that can promote prostate cell proliferation. After its synthesis is inhibited, prostate cells undergo apoptosis, and thus prostate cell hyperplasia can be improved to achieve therapeutic purposes such as reducing the size of the gland and improving lower urinary tract symptoms. In the clinic, through the long-term use of finasteride tablets can slow down the rate of progression of prostate hyperplasia disease, so that the size of the prostate gland is reduced, reducing the chances of patients with prostate hyperplasia to receive surgical treatment. After taking it for a long time for at least three months to more than half a year, there will be obvious effect, usually combined with tamsulosin hydrochloride capsule will be more effective. Patients suffering from prostate disease also need to improve their symptoms by adjusting their living and dietary habits, such as they should drink more water, urinate more often, avoid sedentary lifestyle, avoid spicy and irritating foods, and abstain from alcohol, which can aggravate the congestion and edema of the prostate gland and thus aggravate the clinical symptoms. Drugs should be applied under the guidance of a doctor.