The standard height for a 5 year old boy is around 111.3cm and the standard weight is around 18.98kg. The standard height of a 5-year-old boy is about 111.3cm, and the normal height range is between 107~115.7cm.The standard weight of a 5-year-old boy is about 18.98kg, and the normal weight range is between 16.87~21.46kg.However, the significance of measuring the weight alone is not particularly large, and it should be viewed in conjunction with the height. A child’s height is affected by genetics and also by the acquired environment, such as nutrition, exercise and sleep. Parents can urge their children to do appropriate exercise, jumping high, running, etc.; to develop good eating habits in their daily life, not picky about what they eat, and eat less greasy and high-sugar food, because obesity may not be conducive to the child’s growth; and to keep their five-year-olds’ sleep time at about 9 to 11 hours.