St.John’s wort Extract can be used as a safe neurotrophic product to prevent depression and regulate emotional disorders and mood disorders, eliminate tension and depression, restore self-confidence and improve sleep. Hypericin, an active ingredient extracted from Hypericum perforatum, has significant anti-DNA and RNA. The virus can directly act on the virus DAN such as avian influenza, swine fever, foot-and-mouth disease, and interfere with the replication and reproduction of the virus and have a strong inhibitory effect on the virus.