The standard height for an eight-week-old boy should be 130cm normally, and the range of height should be between 125-135cm. The standard weight for an eight week old boy should be 27.33kg and the range of weight should be between 24.59-30.06kg. Eight-week-old boys whose height and weight are within these ranges are generally considered normal. Eight-week-old boys, who have not yet entered puberty, have a relatively stable development of height and weight at this age. Generally speaking, the annual height growth of children at this age should be 5-7cm, and the weight growth should generally be around 2kg per year. Of course, there may be significant individual differences in the rate of height and weight growth for different children. These individual differences are related to many factors, including genetic factors, nutritional factors, racial factors, exercise factors, disease factors, and sleep factors, among others. If an eight-week-old boy does not meet the elevated weight standard and wants his child’s height and weight to grow, he should pay attention to providing his child with a scientific and reasonable dietary nutritional profile. Both to allow children to increase the intake of high-quality protein, such as fish, beef, lamb, but also to allow children to increase the intake of calcium-rich foods, such as seafood. At the same time, attention should also be paid to appropriate outdoor aerobic exercise for children, such as jumping rope, running, playing ball, etc.. In addition, let your child get enough sleep and try to avoid staying up late. The length of sleep should not be less than 8-10 hours, because there is a peak of growth hormone secretion at night, if the child sleeps too late or the length of sleep is too short, it will affect the secretion of hormones and affect the growth of height and weight of the child.