Gu Hong Injection is a compound preparation containing extracts of acetylglutamine and saffron, mainly used for the treatment of cerebrovascular diseases, such as cerebral blood supply deficiency, cerebral thrombosis, cerebral embolism, and recovery from cerebral hemorrhage. It can also be used to treat liver disease, and dysfunction of consciousness caused by neurosurgery. It can also be used for the treatment of coronary heart disease and vasculitis, which is commonly known as the drug that activates blood circulation and removes blood stasis plus nerve nutrition. This drug is used after dilution with 5% glucose injection or sodium chloride injection, once a day for 10-15 days as a course of treatment. It has the risk of causing a drop in blood pressure, so it should be watched carefully.