Under normal circumstances, it is difficult to grow taller at the age of 28 because the epiphysis is already in a closed state at the age of 28, and it is difficult for the bones to continue to grow and develop when the epiphysis is closed. The factors of body growth are mainly divided into congenital factors and acquired factors, congenital factors account for more than 70% of the total factors of human body growth, congenital factors usually include genetic factors, mainly refers to the height of the offspring controlled by the parents’ genes. Acquired factors only account for 30% of human body height, usually including diet, exercise, environmental factors, etc. If the diet and exercise is not appropriate and the environment is not suitable, it will also cause the human body to grow taller symptoms. Congenital factors affecting height are difficult to change, while acquired factors affecting height can be effectively improved.