The invention belongs to the field of the food deep processing technology and relates to a preparation method of instant ginkgo. The preparation method comprises the steps of removing peel of ginkgo, keeping the hard cover, airing and drying, soaking with salt aqueous solution for 24-48h, and soaking and detoxifying in sodium carbonate solution; uniformly mixing garlic, ginger, pepper, perilla leaf, wolfberries, fresh orange peel, cinnamon, pepper, fennel, Toona sinensis leaf, onion, saccharose, edible salt and distilled water, boiling with big fire, decocting for 2-3h, and filtering to obtain sauce solution; enabling ginkgo to be soaked in the sauce solution, boiling with big fire, controlling the temperature and cooking for 1-2h, taking out, airing and drying the skin to obtain cooked ginkgo for later use; stir-frying the cooked ginkgo at 80-90 DEG C until the hard cover of the ginkgo is opened partially, thereby obtaining the instant ginkgo; and finally, vacuumizing and packaging by a food grade plastic bag. The processing method is simple, the preparation process can be controlled easily, the production cost is low, the instant ginkgo has rich nutrition, can be carried and eaten conveniently and has environment-friendly production environment.