1. Market demand drives the development of 5-stage milk powder. With the improvement of people\’s living standards, the requirements for infant and young child nutrition are becoming higher and higher. At the same time, the liberalization of second children has also further increased market demand. Therefore, Stage 5 milk powder emerged as a new type of infant formula milk powder. 2. Analysis of the nutritional content of 5-stage milk powder. Compared with other stages of milk powder, 5-stage milk powder has some differences in protein, fat, carbohydrates, etc.