Rice, millet, red beans and black beans can be drunk with soybean milk, because these foods are incompatible with each other, and there will be no adverse reactions when they are eaten together. In addition to millet and rice, these raw materials also add black beans and red beans, which is a typical application of protein complementation in food. These foods are rich in essential fatty acids, various trace elements and vitamins. Mixed cereals porridge can give full play to the complementary role of amino acids, learn from each other's strengths and improve the utilization rate of protein. These foods have the effects of invigorating spleen and stomach, resolving food stagnation and losing weight, benefiting qi and calming the nerves.