What is the height standard for a three-year-old baby? Background introduction to height standards With the development of society, people are paying more and more attention to the health and development of children. Therefore, regular testing of children\’s height and weight has become a necessity for modern families. The height standard for three-year-old babies is also a topic of great concern to parents. The reference standard for the height standard of a three-year-old baby. Generally speaking, the height of a three-year-old baby is