Drinking protein powder can help children provide enough energy for their bodies. Since childhood is a crucial period of growth, only by ensuring the adequacy of various nutritional components in the body can children grow taller and stronger. Protein powder contains many nutrients, which is beneficial to children's healthy growth and can also enhance their immune system. It is effective in promoting growth for children, as it can promote bone development, especially during the rapid growth period of childhood. Bones require a large amount of protein, but some children are picky eaters and find it difficult to obtain enough protein from their daily diet. Drinking protein powder can meet their protein needs. It also promotes muscle growth, as muscle relaxation and contraction rely mainly on myosin. Only by obtaining sufficient protein can muscle growth and development be promoted. Therefore, supplementing protein powder can promote protein absorption and contribute to muscle growth, making babies stronger. Finally, it can also enhance children's immune system, as the immune system requires protein to function. Protein powder supplementation plays an important role in the development of children's bodies. A good immune system can effectively prevent the impact and harm of various diseases on children.