The normal standard general height for an eight-year-old boy is 130 cm and the standard weight is 27.33 kg. Individual variations exist due to genetic and acquired influences. Individual variations may exist due to genetic factors, diet and sleep, and other factors affecting the growth rate of a child’s height and weight. The height range of an eight-year-old boy is between 126.3 and 140.4cm, with a median of 130cm, and the weight range should be between 24.46 and 38.49kg, with a median of 27.33kg, which is generally considered normal. Eight-year-old boys are in the stage of uniform growth, the average annual height growth of 5 to 7cm, weight growth of about 2kg. if you find that your child’s height and weight do not meet the standard, you can give your child more high-quality protein, while strengthening exercise. If your child is prone to obesity, you need to control the intake of high-calorie snacks to control your weight. It is recommended that if you find that your child’s growth is abnormal, you should consult a doctor for diagnosis and treatment in a timely manner, and ensure that your child gets 8 to 10 hours of adequate sleep and physical exercise in his or her daily life.