According to "Compendium of Materia Medica", Pleurotus ostreatus is "flat in nature, sweet in taste, nourishing spleen and stomach, benefiting qi and not starving, treating wind and breaking blood, resolving phlegm and regulating qi, benefiting stomach and helping food, and regulating urination. Indications are loss of appetite, qi deficiency and fatigue. " According to research and analysis, mushrooms are rich in protein and amino acids. It contains crude protein 23.2%-24.3%, crude fat 2.92%-3.37%, minerals such as calcium, zinc, phosphorus and iron, and various vitamins. Mushrooms are extremely rich in amino acids, including 17 amino acids and abundant mushroom polysaccharides. Of the eight kinds of amino acids needed by human body, there are 7 kinds, the total amount of essential amino acids is 3.5827%, and the total amount of amino acids is 9.45 15%, all of which are higher than ordinary mushrooms, and they also contain more than 30 kinds of enzymes. The source of vitamin D contained in mushrooms is what vegetables lack, which is 2 1 times that of soybeans.