A method for preparing a dairy product beans

The invention provides a preparation method of a black bean dairy product, and the method comprises the following steps: performing high-temperature de-fishy treatment on well selected black beans, adding alkali for soaking, cleaning, then adopting hot water for grinding so as to get black bean milk, further mixing the black bean milk with fresh milk at a certain mixture ratio, adding auxiliary materials into the mixed bean milk and then performing mixed fermentation culture on the mixed bean milk through lactobacillus casei and streptococcus thermophilus for getting the final black bean dairy product with abundant nutritional value. The preparation method of the black bean dairy product has the advantages of fusing the nutritional value of the black beans and the milk and enabling nutritional ingredients in the prepared black bean dairy product to be absorbed and digested by a human body more easily.