The nutritional composition of eggs is as follows: 1. They are rich in protein and contain the essential amino acids needed by the human body, and the composition of amino acids is close to the composition pattern of human amino acids. Therefore, the protein of whole eggs can be almost completely absorbed and used by the human body, which is ideal for high quality protein; 2. The egg yolk is rich in trace elements, such as calcium, iron and phosphorus, which provide rich raw materials for the composition of enzymes in the body; 3. role.