Hypertensive patients can take sildenafil to improve sexual function, the specific use of drugs need to follow the doctor’s instructions. Sildenafil has a mild lowering effect on blood pressure, and can be used by hypertensive patients with good blood pressure control under the guidance of a doctor. It can dilate the root blood vessels and improve male sexual function. The physiological mechanism of penile erection in normal people involves the release of nitric oxide (NO)) in the body during sexual stimulation. Nitric oxide activates guanylate cyclase in the smooth muscle cells of the cavernous body of the penis, leading to elevated levels of cGMP, which results in relaxation of the smooth muscle in the cavernous body, dilation of the cavernous sinus, and inflow of blood to cause penile erection. The drug should not be used if a man is suffering from high blood pressure or has other cardiovascular factors that make him unsuitable for sexual activity. And the drug has the effect of lowering blood pressure, patients with blood pressure > 170/110mmHg should not use it, or use it under the guidance of a doctor. If hypertensive patients need to take sex drugs, please consult a clinician, do not take the drug on your own, so as not to cause hypertension complications.