A composition comprising extract of Angelica dahurica or furanocoumarins isolated therefrom for preventing or treating Avian influenza Swine influenza or Corona virus

The present invention relates to a composition comprising an extract of Angelica dahurica root or a compound isolated therefrom for preventing or treating avian influenza, swine influenza or corona virus. The extract or the compound isolated therefrom is effective in inhibiting avian influenza, swine influenza or corona virus, and can be usefully applied to medicines, health foods, animal drugs, an additive for animal feeds, a natural disinfectant, etc. by being extracted from Angelica dahurica root, which has used as medicinal herbs, and separated and purified to have low cytotoxicity.