A Folium Apocyni Veneti extractive preparation method, comprising: cold-drying, grinding, sifting, and degreasing Folium Apocyni Veneti, to obtain a filter cake drying the filter cake, adding the filter cake to absolute ethyl alcohol for ultrasonic extraction, and performing filtering to obtain an extract solution and residue performing multi-stage countercurrent pulse extraction on the residue to obtain an extract liquor after mixing the extract liquor and the extract solution, treating the mixture with a macroporous absorption resin, and then performing eluting by using water and ethyl alcohol in sequence, concentrating, and drying, to obtain a Folium Apocyni Veneti extractive. Specific operations of the multi-stage countercurrent pulse extraction comprises the following steps: conveying the residue into an extractor, and performing N-stage spraying and soaking extraction on the residue by using an extracting agent of the Folium Apocyni Veneti extractive, to obtain the extract liquor and residual dregs and the mass fraction of the Folium Apocyni Veneti extractive in an extracting agent used in the Mth stage is higher than the mass fraction of the Folium Apocyni Veneti extractive in an extracting agent used in the (M-1)th stage, where 2≤M≤N. The method features a high extraction speed, high extraction precision, and low production costs, and reduces the energy consumption.Linvention concerne un procédé de préparation extractive de feuilles dApocynum venetum, qui comprend les étapes suivantes : sécher à froid, broyer, tamiser et dégraisser les feuilles dApocynum venetum, pour obtenir un gâteau de filtration sécher le gâteau de filtration, ajouter le gâteau de filtration à de lalcool éthylique absolu pour une extraction par ultrasons, et effectuer une filtration pour obtenir une solution dextraction et un résidu effectuer une extraction liquide-liquide pulsée multi-étagée à contre-courant sur le résidu pour obtenir une solution alcoolique dextraction après mélange
