The height of a one and a half year old child can be about 75cm to 89cm, but there are individual differences, boys and girls are different, there is no absolute standard. There are individual differences in the development of one and a half year old children, due to the fact that height is related to the living environment, genetic factors, nutritional factors, acquired factors and so on, there will be a big difference. Some are on the taller side, some on the shorter side, but in general, the height of boys tends to be around 76cm to 89cm, and the height of girls tends to be around 75cm to 87cm. Although there is no absolute standard for a child’s height at one and a half years old, if the height is significantly different from that of children of the same age, it is recommended that the child be taken to the hospital in time for medical examination, to exclude disease factors, and if necessary, under the guidance of the doctor to carry out active treatment and treatment.