Method for extracting peony flavone dry powder

The invention relates to an extraction method of peony flavone dry powder, which comprises the following steps: picking peony petals, and carrying out microwave twice enzyme deactivation to quickly inactivate enzyme in the peony petals, so as to preserve more antioxidant components of flavone; meanwhile, a part of moisture in the peony petals is removed, so that the peony petals are prevented from being rotted due to heat generated by respiration when being stacked, and the peony petals subjected to microwave fixation are cleaned again, only the surfaces of the peony petals hang water but do not absorb water, so that the subsequent drying time is shortened; in addition, the active components in the peony petals are fully protected through low-temperature drying; a peony flower dry powder and water mixed solution is pre-extracted by adopting microwaves, the selective effect of microwaves on water molecules is fully utilized, flavone dissolved in water is further extracted, and cell walls are rapidly opened by