Baby height is low, the specific reasons are as follows: First, affected by genetic factors, such as parents or immediate family members are shorter, this situation baby height will be low, is caused by genetic genes. Second, by diet, exercise, sleep and other life factors, if the child’s diet is partial, picky, poor appetite, and less sleep every night, sleep is not real, while the child to bounce sports and other exercises conducive to growth is less, this situation will be low height children. Immunity, such as the child’s immune function is relatively poor always sick, will also lead to low height children. Endocrine factors, such as hypothyroidism, precocious puberty or congenital adrenocortical hyperplasia and other endocrine disorders, can also lead to low height of the baby. V. Idiopathic dwarfism, for which no specific cause can be found.