The main function of Dan Shen Tablets is to invigorate blood circulation and resolve blood stasis. It is used for chest paralysis caused by blood stasis and obstruction, which is characterized by chest pain, fixed pain and purple tongue; angina pectoris and restlessness caused by coronary heart disease. As a common Chinese medicine, the effects of Salvia miltiorrhiza include clearing the heart, cooling the blood, relieving pain, regulating menstruation, activating blood circulation and resolving blood stasis. It was first recorded in Shennong Ben Cao Jing, and is slightly cold, non-toxic and bitter in taste. After that, it was included in all kinds of materia medica. It is also known as purple salvia, red body, red root, etc. It is slightly cold and bitter in taste, and can be classified as spleen, kidney, liver and heart meridians. Dan Shen has a wide range of uses, such as tendon and muscle diseases, including rheumatism and paralysis, foot weakness, foot paralysis, lumbar spine strength, etc.; gynecological diseases, including stillbirth, dysbiosis, hemorrhage, uneven tendons and veins, dysmenorrhea, menstrual disorders, etc.; carbuncle and swelling diseases, including malignant sores and scabies, gall and swelling poison, treatment of Dan Poison, etc.; heart and abdominal diseases, including abdominal pain, chronic diseases of the heart and abdomen, pain in the heart and abdomen, evil energy in the heart and abdomen, etc. In recent years, the research on Salvia miltiorrhiza has focused on the treatment of cardiovascular diseases, especially in the treatment of coronary heart disease. For coronary heart disease, the therapeutic mechanism of Salvia miltiorrhiza mainly includes: inhibition of inflammatory response, antioxidation, scavenging of free radicals, regulation of calcium ion metabolism, anti-atherosclerosis, hypolipidemia, improvement of myocardial ischemia, inhibition of platelet agglutination, anti-thrombosis, vasodilation, etc.