Height standard
The height of a 4-year-old boy is 103cm according to the World Health Organization standard, which is almost the same as that of China. The upper limit can reach 1, 2 1cm, and the lower limit can reach 95 cm, so if it is lower than the lower limit, it is considered unqualified.
Weight standard
Usually, the weight of a 4-year-old child is 16 kg, but the weight standard also needs to be based on the child's length. A tall child has a big weight, the same weight. If he is tall, he may not be fat or thin. If he is small, he may be a fat child.
The relationship between height and weight
There is also a standard for weight, which can be marked together with the length standard to observe whether the child's height and weight are medium or low. At the same time, observe its length. 3-4 years old will grow 2 kilograms a year. If they grow too much, they may become obese; if they grow too little, they may lose weight.
Observe the extent of children's growth.
Parents should pay attention to the range of children's height, whether it is height or weight. Children aged 3-4, 1, and 6.5-8 cm are normal. Parents can measure their children's length every three months, and any problems need to be corrected in time.