The average height of a 2-year-old boy is 78.3-99.5cm, his weight is 19.06-17.54kg, and his head circumference is 44.6-52.5cm.The average height of a girl is 77.3-98cm, her weight is 18.7-16.77kg, and her head circumference is 43.6-51.4cm.2-year-old babies are more hands-on, and when babies encounter difficulties and ask for help from their mothers, they can Exercise the baby’s problem-solving ability, the mother should give the baby care and assistance, the baby usually can solve the problem smoothly. At this time, babies are able to bounce on both legs and leave the ground when bouncing. Babies can twist books with their hands and turn pages. Babies like to ask questions, such as what is this and what is that. This is a time when babies like to play after children who are older than they are.