The average height of a newborn baby is around 50cm, which varies from baby to baby, depending on the age of the month of birth and whether or not the baby is a low birth weight baby, and the height of each newborn baby varies slightly. However, when analyzing data from a large sample, most infants are around 50cm tall. If there is a significant deviation of 50cm, parents should promptly look for the causes of the low height of the infant, such as those caused by intrauterine dysplasia, hypoxia, and inherited metabolic diseases. In this case, parents should take into account the baby’s other manifestations, such as the presence of congenital anomalies, such as cleft lip and palate, congenital heart disease, and so on. If there are malformations, the newborn should be tested for genetic or chromosomal screening to detect inherited metabolic disorders as early as possible and target treatment.