Heart Saver and Nitroglycerin are both emergency medicines used to relieve coronary heart disease and angina pectoris. Heart Saver belongs to the category of proprietary Chinese medicines whose main function is to promote qi and blood circulation, remove blood stasis and relieve pain, increase coronary blood flow and relieve angina pectoris, and is used to treat coronary heart disease and angina pectoris caused by qi stagnation and blood stasis, and its main ingredients are chuanxiong ligustici and ice tablets. From the perspective of medicinal properties, the drug is on the cold side, so Heart Saver is prone to injure the yang energy in the body, so patients with yang deficiency are less suitable to take Heart Saver. Nitroglycerin is a kind of western medicine, which can directly relax the smooth muscle of blood vessels, especially the smooth muscle of small blood vessels, so that the peripheral blood vessels are dilated, the peripheral resistance is reduced, the return blood volume is reduced, the cardiac output is reduced, the heart load is reduced, and the myocardial oxygen consumption is lowered, so as to alleviate angina pectoris. Nitroglycerin can also promote the formation of collateral circulation, sublingual sublingual 2-3 minutes after the role can be played, can be maintained for about 30 minutes or so, part of the people who take nitroglycerin after the expansion of blood vessels is easy to trigger the side effect of head swelling and pain, so the rescue pills and nitroglycerin according to the different people to distinguish between the choice.