Eight-month-old babies have different height and weight standards depending on their gender. Male babies are 68.3 to 73.6 centimeters tall, with a standard weight in the range of 7.8 to 9.8 kilograms, while female babies are 66.4 to 71.8 centimeters tall, with a standard weight in the range of 7.2 to 9.1 kilograms. Infant growth is affected by genetics and feeding methods, development is fast and slow, fluctuating within a standard value is a reasonable phenomenon, do not need to worry too much. If your baby’s height and weight are below 2 standardized values of the healthy range, you should consider the possibility of growth retardation and need to intervene as early as possible to avoid affecting your baby’s subsequent development. Newborns should start to go to the hospital from 28 days to build a file, do routine pediatric insurance checkups, and complete monthly checkups before one year of age, height and weight are part of the scope of pediatric insurance checkups. If there is a phenomenon of developmental backwardness, a systematic examination should be done under the guidance of the doctor to exclude the influence of pathological factors and intervene in the treatment as early as possible to ensure the normal development of the baby.