The invention relates to a black soybean food which uses black soybean as a main
raw material and traditional Chinese medicines as auxiliary materials, and a preparation method thereof. The preparation method is characterized by comprising the following steps of: respectively taking prepared Radix Polygoni Multiflori, lucid
ganoderma, mulberry,
ligustrum lucidum, black sesame and prepared
rehmannia root according to a weight ratio of 5 / 12-7 / 12 accounting in the black soybean, adding water, boiling and decocting and then filtering to obtain a liquid
medicine; then taking pepper, fructus anisi stellati, fennel, cinnamon,
pericarpium citri reticulatae, angelica, galangal, fructus piperis longi, rhizoma zingiberis, galangal fruit,
Kaempferia galangal and the like according to the right amount for being mixed and smashed via mesh screen to obtain a
fine powder seasoning; taking
halite according to a weight ratio of 1 / 25-1 / 30 accounting in the black soybean, putting the black soybean into the liquid
medicine for boiling and decocting, adding the
halite and the fined
seasoning for adjusting the taste, baking in a heated air circulation oven, and taking out for eating. The black soybean food provided by the invention is rich in
protein,
lecithin, fat and
vitamin, has the functions of activating blood,
diuresis, dispelling wind,
detoxication and
softening the blood vessels and has good
efficacy for patients suffering from hypertension,
heart disease and the like.