The protein content of mushrooms is generally 1.5-6% for fresh mushrooms and 15-35% for dried mushrooms, which is higher than that of general vegetables. Moreover, its amino acid composition is more comprehensive, and most of the mushrooms contain eight kinds of amino acids essential for human body, among which mushrooms, straw mushrooms and enoki mushrooms are rich in lysine, which is lacked in cereals. Lysine is good for children's physical and intellectual development. Mushrooms contain a variety of vitamins and a variety of physiologically active mineral elements. Such as VB1, VB12, Vc, Vk, VD and phosphorus, sodium, potassium, calcium, iron and many trace elements, which can supplement the lack of other foods.