Hypertension usually has five major categories of antihypertensive drugs, specifically: 1, calcium antagonists: diastolic smooth muscle, allowing vasodilation, resulting in lower peripheral resistance and lower blood pressure; 2, angiotensin-converting enzyme inhibitors: antagonize angiotensin-converting enzyme, making the blood vessels in a state of diastole, thereby reducing peripheral resistance and lowering blood pressure; 3, angiotensin II receptor antagonists: their effects and angiotensin conversion enzyme inhibitors, but less adverse reactions, such as coughing less adverse reactions than angiotensin-converting enzyme inhibitors; 4, diuretics: so that the patient’s body excess water out of the body, thus prompting a reduction in effective circulating blood volume, resulting in a drop in blood pressure, there are certain adverse reactions, such as will affect the metabolism of blood sugar and blood lipids; 5, beta-blockers: the role is to inhibit the excitability of sympathetic nerves, while antagonize beta receptors, which exist in the heart and also in the peripheral vasculature, reducing the heart’s ability to expel blood thus causing the heart’s ejection volume to drop, causing blood pressure to fall.