Fuente: WIPO "dairy products" The invention relates to the technical field of dairy products, and particularly provides high-power nutritional milk and a preparation method thereof. The preparation method provided by the invention comprises the following steps: performing milk-fat separation on raw milk to obtain skimmed milk and single cream, performing three-stage freezing concentration on the skimmed milk to obtain concentrated milk, and performing INF sterilization on the concentrated milk; the INF sterilization temperature is 125-133 DEG C, and obtaining the high-power nutritional milk. The protein content in the high-power nutritional milk is greater than 6%. According to the preparation method provided by the invention, the retention rate of active nutrients in the product can be higher than 40%, the nutritional ingredients of the raw milk can be improved to a relatively high level, and meanwhile, most active nutrients and fresh taste in the raw milk are retained.