1. Protein powder is a kind of health food, which is mainly made of soybean protein or whey protein. Among them, soybean protein is derived from soybean protein, which can provide amino acid components and immune antibodies. Whey protein is separated from milk whey with high purity and good absorption rate, and it also contains amino acids necessary for human cell structure. Therefore, the main function of protein powder is to provide protein with essential amino acids to ensure the normal metabolic function of human body. 2. The main function of protein powder is to improve the nutritional status of human body. Protein powder can supplement essential amino acids, promote wound healing and physical recovery and improve malnutrition. To promote muscle growth, protein is the main component of muscle structure, so supplementing protein powder is helpful to supplement muscle components, help muscle recover and shape the structure. Improve the immunity of the body. Protein powder can provide the essential amino acid components of immunoglobulin and help cells repair, so it can improve immunity. Protein needs to go through the metabolism of liver and kidney, so taking too much protein powder will increase the burden of liver and kidney, and it will also affect the digestive function and cause indigestion. Excessive use of protein can be converted into fat, thus affecting the metabolism of fat, leading to hyperlipidemia and secondary cardiovascular diseases.