The invention discloses a nut beverage and a preparation technology thereof, and belongs to the field of food processing. The nut beverage comprises the following components in parts by weight of 3-10parts of soybean flour, 3-8 parts of walnut kernels, 3-8 parts of almond kernels, 1-5 parts of hazelnut kernels, 1-5 parts of cashew kernels and 1-3 parts of melon seed kernels. The preparation technology of the nut beverage comprises the following steps of performing peeling, performing selecting, performing baking, performing premixing, performing refining, performing blending, performing homogenizing and performing sterilization. The nut beverage disclosed by the invention solves the problem that a conventional nut beverage is high in production cost, single in nutrients and poor in mouthfeel and flavor. The soybean flour, the walnut kernels, the almond kernels, the hazelnut kernels, the cashew kernels and the melon seed kernels are matched and mixed in proportion, so that the nut beverage is prepared, the nut beverage is guaranteed to have rich nutrient substances. Besides, the cost is reduced, and the mouth feel and the flavor of the prepared nut beverage are good.