Application of flaccid knotweed herb flavone ethyl acetate part in resisting porcine pseudorabies virus and medicine for resisting porcine pseudorabies virus

The invention relates to the technical field of porcine pseudorabies virus resistance, in particular to application of a flaccid knotweed herb flavone ethyl acetate part in porcine pseudorabies virus resistance and a porcine pseudorabies virus resistance medicine. The research finds that the flaccid knotweed herb flavone ethyl acetate part has the effect of resisting the porcine pseudorabies virus in vitro, and FEA resists the PRV through three action modes of blocking the porcine pseudorabies virus, inhibiting the proliferation of the porcine pseudorabies virus and directly inactivating the porcine pseudorabies virus. Research finds that FEA has a certain inhibition effect on PRV, the antiviral effect is achieved mainly in two modes of virus proliferation inhibition and direct virus inactivation, dose dependence is achieved, and for PK-15 cells, the antiviral effect is the best when the FEA concentration ranges from 100 micrograms/mL to 200 micrograms/mL. The research finds that FEA has a strong protection e