The invention discloses application of a Xiyanping injection for preparation of drugs for treating and / or preventing the neurodegenerative
disease. Through experimental data, it can be known that the Xiyanping injection better improves the learning and memory capability of AD mice, in conclusion, the good improving effect is achieved on the mouse Parkinson's
disease, and compared with the
levodopa, side effects are avoided; and thus, the new application and action mechanisms are provided for
drug repurposing of the Xiyanping injection, new prospects are developed for clinical application of the Xiyanping injection, and the Xiyanping injection is capable of achieving
mass production in industry, capable of being applied to clinic and is remarkable in effect. Under the
precondition that medical and pharmaceutical researchers do not perform relevant experiments, the medical and pharmaceutical researchers cannot know that the Xiyanping injection has good application in preparation of the drugs for treating and / or preventing the neurodegenerative
disease in advance.