Hypericum perforatum extract can be used as a safe neurotrophin to prevent depression, regulate emotional disorders and emotional disorders, eliminate tension and depression, restore self-confidence and improve sleep. Hypericin, an effective ingredient extracted from Hypericum perforatum, has significant anti DNA and RNA virus effects, and can directly act on avian influenza, swine fever, foot-and-mouth disease and other viruses, interfering with the replication and reproduction of the virus It has a strong inhibitory effect on the virus.