What is the importance of pureed food feeding? Malnutrition anemia, iron deficiency, vitamin deficiency (vitamin D, K), and micronutrient deficiency (calcium, zinc, selenium, etc.) are likely to occur with poor feeding of pureed foods. Inadequate nutritional support has a significant delay and damaging effect on the development of potential, ability and intelligence in old age and adolescence; it has an aggravating and worsening effect on physical health, loss of important nutrients, functional degeneration and rapid aging in middle and old age. Until now, this situation is still very serious; and national reports show that this serious deficiency is widely distributed. Pureed foods are the main food in the transition from liquid to solid foods. The three food forms in infancy and early childhood are the result of long-term natural selection in the evolutionary process, and are the expression of ecological diversity to preserve life and maintain health, and are the insurmountable food and nutrition forms in the development of human ecology. Pureed food is not a “side food” or “supplementary food”, but is the main food in the transition phase from liquid to solid food. Pureed food feeding represents a separate stage of human growth and development. This stage is unique to humans and is not present in other mammals. The importance of this stage of feeding is that it directly affects the growth and developmental dynamics during adolescence, the expression of potential development, the level of physical health in later life, and even the expected length of life. For a long time, the reason for the lack of awareness of pureed foods, and even the misconception that pureed foods are not important and dispensable, comes from the name of these foods – “complementary foods”, or “supplementary foods” for short. In fact, pureed food is the “main food” of this growth and development stage, not “supplementary food”.