Compound Dan Shen Drops is a Chinese patent medicine commonly used in cardiovascular diseases, commonly used to prevent and treat coronary heart disease, atherosclerosis and to prevent arterial thrombosis, and its effects can be explained from both Chinese and Western medicine. In TCM, the commonly used formula of compound Dan Shen Drops is composed of Dan Shen and Panax notoginseng, which has the effect of activating blood stasis, regulating Qi and relieving pain, and is effective for precordial stabbing pain caused by Qi stagnation and blood stasis. If the sudden precordial stabbing pain is induced by activity or emotional excitement, taking the drug under the tongue for 3-5 minutes can reduce the symptoms. In Western medicine, the drug can dilate the coronary arteries of the heart, thus increasing the blood supply to the heart to treat angina pectoris caused by coronary artery atherosclerosis. The drug can also reduce blood viscosity, blood lipids and inhibit platelet aggregation, thus preventing atherosclerosis and thrombosis.