Boy’s height and standard weight has a formula, under normal circumstances, the boy’s height minus 80 cm multiplied by 70% is the normal standard weight. Take 180cm boy as an example, the standard weight is 180-80 multiplied by 0.7, about 70kg. normal people’s body weight according to the standard weight up and down there are fluctuations, about fluctuations of 10%, that is, 180cm children, the normal weight of about 63-77kg. over the indicator means that the child is overweight, over less than 10% is called overweight, exceeding 10%-20% is mildly obese, over 20%-30% is moderately obese, over 20%-30% is moderately obese. Is mild obesity, more than 20%-30% is moderate obesity, more than 50% is severe obesity.