Valley Red Injection is a sterilized aqueous solution made of acetyl glutamate and safflower extract, which have synergistic effects and can exert the effects of antiplatelet aggregation, antithrombosis, improvement of microcirculation, and antioxidant free radicals. In addition, Guhong Injection can also effectively absorb hematoma, so it has better efficacy in the early treatment of cerebral hemorrhage disease. Its principle of action is mainly that the hemoglobin after the decomposition of blood clots is removed by phagocytosis, and the absorption speed is related to the increase of capillaries around the hematoma in the late stage and the aggregation of phagocytes, and it is safe and effective.