The main components of Xiang Dan Injection are Salvia miltiorrhiza and Radix et Rhizoma, which can activate blood circulation and dilate blood vessels, and have better efficacy for coronary artery disease and myocardial ischemia, and can be used to activate blood circulation and resolve blood stasis in allergic purpura, sepsis, septic shock, acute phase of hemorrhagic stroke, etc. There is more evidence. Xiangdan injection is widely used clinically and belongs to Class A drugs under medical insurance. In order to achieve better efficacy and reduce the incidence of its adverse reactions, it is important to carefully ask the patient’s medication history, avoid the application of allergic patients, pay attention to the presence of precipitation, turbidity, air leakage and other conditions in the drug solution before using the drug, and if it appears unsuitable for use, strictly follow the indications and clarify the dosage and usage of the drug.