The invention relates to a marinating material, a marinated beancurd sheet and a preparation method thereof, and belongs to the technical field of food processing. The marinating material comprises the following main components: tea leaves, xylooligosaccharide, edible salt, soy sauce, hericium erinaceus powder, bamboo shoot powder, a yeast extract, star anise, cinnamon, amomum tsaoko, clove, pepper, dried orange peel, myrcia, radix angelicae, licorice, ginger, amomum villosum, amomum cardamomum, netmeg and edible oil. The components achieve a synergistic effect; through addition of the marinating material during production of a marinated product, the effect of endowing the marinated product with a good mouth feel is achieved, and the health-care effects of inhibiting bacteria, helping digestion, promoting absorption, lowering blood pressure and blood fat and the like are achieved.