Hypertension infusion drugs, there are the following: 1, nitroglycerin, can relax vascular smooth muscle, release nitric oxide, causing vasodilation, reduce the anterior and posterior load, thereby reducing blood pressure. 2, sodium nitroprusside injection, it is a rapid-acting and short-acting vasodilator, through the vascular endothelium to produce nitric oxide, on arterial and venous smooth muscle, both have a direct dilating effect, but does not affect the uterus, the 3.Nicardipine injection, this drug is a dihydropyridine Ca ion antagonist, which can block Ca ion flow into vascular smooth muscle cells, thus dilating blood vessels and lowering blood pressure. 4.Uladil injection, it can block the post-synaptic α1 receptors and inhibit the vasoconstrictive effect of catecholamines, thus reducing peripheral vascular resistance and cardiac load, thus lowering blood pressure.