The average height of a 14-year-old girl is at 159 cm and the average weight is around 48 kg. Since height and weight are related to genetic factors, dietary factors, frequency of exercise, etc., there is individual differentiation. There is no absolute standard for the height and weight of a 14-year-old girl because there are many influencing factors. If the difference is not great compared with her peers, no special treatment is usually needed. Most 14-year-old girls have an average height of 159 centimeters and an average weight of about 48 kilograms. Although there are individual differences, but the child’s height difference with girls of the same age is more obvious, it is recommended to consult a doctor in time to rule out disease factors. If a disease such as growth hormone deficiency or precocious puberty is diagnosed, it should be treated early and aggressively under the guidance of a doctor to avoid delays.