The height of 168cm at the age of 14, at this time is not able to predict how tall you will be at the age of 18. 14 years old is generally in the stage of puberty, puberty is the second peak of human growth and development. In general, after entering puberty, boys’ height grows about 7-9cm per year on average, while girls can grow about 5-7cm per year on average. but both boys and girls, because each person’s genetic factors, nutritional status, exercise status are different, height growth rate is also different, so there are obvious individual differences in personal height growth. Therefore, it is impossible to make an accurate prediction of how tall a 14-year-old adolescent will be at the age of 18 if he or she is 168cm tall. However, in order to promote height growth and development, it is recommended that adolescents should develop good dietary habits, follow the principle of dietary diversity, and not be picky or partial in eating, so as to provide sufficient nutrients, such as protein, calcium, iron and vitamins, for the growth and development of the body. In addition, appropriate physical exercise and sufficient sleep time are helpful to the height growth of teenagers.