The height of one year and six months old male babies is generally 79.8~85.6cm and their weight is 10.1~12.4kg, while the height of female babies is generally 78.7~84.5cm and their weight is 9.54~11.76kg. When one year and six months old babies are measured for height and weight, they are mainly compared with healthy children of the same gender. Moreover, height and weight have a lot to do with their own nutrition, and if they are better nourished, they will grow faster in height and weight comparatively speaking. Generally speaking, the height of a one-year and six-month-old baby boy is 79.8-85.6cm and his weight is 10.1-12.4kg, while the height of a baby girl is 78.7-84.5cm and her weight is 9.54-11.76kg. In addition, height and weight are also related to genetic factors, if the parents are taller children will be relatively taller, but not necessarily. One year and six months old baby is in the rapid stage of growth and development, parents usually pay attention to the baby to increase nutrition, promote development, if the height and weight are obviously low, try to go to the hospital to find out why.