There is no absolute standard for the height of 5-6 year olds. Most 5 year old babies are around 97.8cm to 124.7cm, and 6 year old babies are around 103.2cm to 132.1cm, with variations between male and female babies. Because genetics, nutrition, disease, living environment and other factors will affect the baby’s height, so individual differences are more obvious, there is no absolute standard. In general, the height of a 5-year-old baby boy is about 98.7cm to 124.7cm, the height of a 5-year-old girl is about 97.8cm to 123.4cm, the height of a 6-year-old boy is about 104.1cm to 132.1cm, and the height of a 6-year-old girl is about 103.2cm to 130.8cm. However, when it appears that the height of a 5-6 year old baby is significantly different from that of a child of the same age, it is recommended that the child should be taken to the hospital in time for a checkup and evaluation so as not to delay the condition.