Danshen Drops, the full name is Compound Danshen Drops. Its efficacy is to invigorate blood circulation, resolve blood stasis, regulate qi and relieve pain. It is clinically used for chest paralysis caused by Qi stagnation and blood stasis, which is characterized by chest tightness and tingling pain in the precordial region; angina pectoris in coronary heart disease. The main ingredients of Salviae Drops are Salviae, Panax notoginseng and ice chips. Salvia miltiorrhiza is bitter in taste, which can promote blood circulation and remove blood stasis, and is the main medicine; Panax notoginseng activates blood circulation and removes blood stasis, promotes blood circulation and relieves pain, and is the main medicine; Bing tablets are pungent and aromatic, aromatic and open the orifice, and induce the medicine into the heart, so as to promote Yang and fix pain. The combination of the three drugs has the effect of activating blood circulation, resolving blood stasis, regulating qi and relieving pain. Modern pharmacological research: Salvia miltiorrhiza contains tanshinone, tanshinin, etc., which can dilate coronary arteries, increase coronary flow and improve microcirculation, as well as anticoagulation, inhibit platelet aggregation and thus inhibit thrombosis; Panax notoginseng contains panax notoginseng saponin, etc., which can inhibit platelet aggregation and reduce myocardial oxygen consumption, with anti-angina and anti-arrhythmia effects; borneol, also known as lobster borneol, has the effects of opening the orifices and waking the mind, clearing heat and relieving pain. It has a certain effect on the treatment of coronary angina pectoris. Danshen Drops is mainly used for chest paralysis and chest pain caused by Qi stagnation and blood stasis, but it is not suitable for patients with angina pectoris caused by cold stagnation and blood stasis, so before using the drug, the type of evidence should be determined by Chinese medicine before use.