According to the investigation results of children's physical development, the Women and Social Welfare Department of the Ministry of Health organized relevant experts to study and formulate the Reference Standards for the Growth and Development of Children under 7 in China, which was officially promulgated by the Ministry of Health on June 2, 2009. The development of boys and girls is different. Parents can refer to the data in the table below to see if the child's height and weight are normal. It should be noted that the following data are not absolute standards. As long as the child's height and weight are within the normal range and there is no abnormal disease, parents need not worry too much.

Table 1.7 standard value of height (length) for boys under 7 years old (cm)

Note: the length in the table is before 3 years old and the height is after 3 years old.

Table 2 Standard height (length) (cm) of girls under 7 years old

Note: the length in the table is before 3 years old and the height is after 3 years old.

Table 3 Standard weight of boys under 7 years old (kg)

Table 4 Standard weight of girls under 7 years old (kg)

Note: "median" refers to the average level of population; If it is within the range of "-1sd~ median ~+ 1sd", it belongs to the "normal range", representing 68% of children; If it is within the range of "(-2sd~- 1sd)" or (+1sd~+2sd) ",that is, within the range of two standard deviations above and below the median, it is defined as" short (high) ",representing 27.4% of children; If it is within the three standard deviations of "(-3sd~-2sd) or (+2sd~+3sd)", it is defined as "short (high)", representing 4.6% of children. Very few children are in three standard deviations (

Standard formula for infant weight measurement:

1-6-month-old weight (kg) = birth weight (or 3kg)+month-old ×0.6 (kg)

7-65438+February weight (kg) = birth weight (or 3 kg)+month age ×0.5 (kg)

2- 10 years old weight (kg) = age ×2+7 (or 8)

The growth law of infant height standard;

The average length of a full-term child is 50 cm, which increases by about 25 cm in the first year after birth, so it is about 75 cm at the age of one. After that, the average annual growth will be about 5 cm, so the length of children after 2- 12 years old (cm)= age ×5+75 (cm). Anyone whose height exceeds the standard 10% or is lower than 10% is regarded as abnormal.