According to the Ministry of Health's Reference Standards for the Growth and Development of Children Under 7 in China, the height and weight standards for 4-year-old babies should be as follows:
Boys weighing 12.01-23.73kg and 92.5-116.5cm in height; girls weighing 11.62-23.30kg and 91.7-115.3cm in height.
A 4-year-old baby Already with an adult's sense of coordination and balance, he can walk and run with a big, strong, confident stride, walk up and down stairs without holding onto a railing, stand on his toes, spin in a circle, and bounce back and forth. His muscles are also strong enough to perform challenging tasks such as somersaults and standing long jumps. Babies are able to perform forward rolls independently. When a ball is thrown to a child, he is able to catch it in his hands with his arms bent.
Four-year-olds have a basic understanding of and are able to answer the questions "when" and "how," indicating that they have concepts of "time" and "the state and manner of things. The concepts of "time" and "things" and the use of "under, after, and outside" are basically grasped by 4-year-olds, and they can use language to briefly describe the content of the pictures they see.
Feeding a 4-year-old baby should be done in a scientific and rational way, providing the baby with more and more varieties of food. At this time the baby can try a lot of adult food, pay attention to choose those without pesticide contamination, no mold, low nitrate content, and fresh and clean food, such as rice, noodles, beans, celery, onions, garlic, leeks, potatoes, radishes, groundnuts and so on.
Additionally, babies in this period of time should also pay attention to the intake of vitamin D. Vitamin D can help the body's calcium and phosphorus to be absorbed, which is particularly important for the development of 4-year-old baby's bones. In addition to supplemental vitamin D drops, you can also get from milk, fish food. 4-year-old babies should eat more fish food.