The height and weight standard of 6-month-olds ranges from 61.4-75.8cm and 5.97-11.72Kg for boys, and 60.1-74.0cm and 5.64-10.93Kg for girls.There are variations in different regions and individuals. Under normal circumstances, the height range of a full-term newborn is 61.4-75.8cm and the weight is 5.97-11.72Kg for boys; the height range of a girl is 60.1-74.0cm and the weight is 5.64-10.93Kg. Different regions and different individuals are affected by nutrition, heredity, physical fitness and so on, so the difference is relatively large. Generally speaking, if the child’s height and weight are within the range, parents do not need to worry. However, if it deviates greatly from the range, it is necessary to be alert to abnormalities. Generally speaking, if the height is short, it is necessary to check whether the child’s growth is restricted due to vitamin D deficiency, growth hormone deficiency and other reasons. If the weight is below standard, it is wasting, usually due to protein malnutrition. If the weight is significantly higher than the standard, it is considered to be a problem of overweight, and you need to go to the hospital to assess whether it is overweight, mild obesity or severe obesity, etc.