Baby’s growth and development depends on the following three indicators A. Weight: The most important and sensitive indicator reflecting the growth and development of children, can reflect the child’s nutritional status. Weight in the first three months of life, the fastest growth, generally 600 to 1000 grams per month, preferably not less than 600 grams. 3 to 6 months of general monthly growth of 600 to 800 grams. 6 to 12 months of average monthly growth of 300 grams. 1 year after the child’s growth rate significantly slowed down, 1 to 3 years old children’s average monthly weight growth of 150 grams.
Second, the length: short-term factors affecting growth and development (nutrition, disease, etc.) on the length of the impact is not obvious, mainly by genetics, race and the environment is more obvious. Length growth is fastest in the first year after birth, with an average annual growth of 25 cm. The average growth in the second year is 10 cm, and the average growth in the third year is 4-7.5 cm. Head circumference: head circumference is an important indicator of the child’s brain development. At birth, the average head circumference is 34cm; at the age of 1 year, the average is 46cm; the second year increases by 2cm, and the third year increases by 1 to 2cm. At the age of 3 years, the average head circumference is 48cm, similar to that of adults.