The height of the children in the second year of junior high school is 154 centimeters, and their height is on the low side. Usually, you can strengthen physical exercise and increase nutrition, which is very helpful to the growth of height. If necessary, it is recommended to go to the hospital in time for early treatment. The age of children in the second year of junior high school is about 14 to 16 years old, according to the table of height and weight values for children and adolescents aged 0 to 18 years old published in 2021, it can be seen that the standard height for girls aged 14 to 16 years old is between 158.6 and 165.5 centimeters, and the standard height for boys is between 165.9 and 177.8 centimeters. Therefore, a junior’s height of 154 centimeters is on the short side. It is recommended that children and teenagers, in their daily life, should have balanced nutrition, pay attention to calcium supplementation, strengthen physical exercise, and ensure sufficient sleep, in order to ensure the healthy growth of the body.