According to the 2021 height and weight chart for girls aged 0 to 18, the standard height for a 15-year-old girl is 159.8cm. Below 149.5cm is short, indicating growth retardation, you should go to the hospital in time to find out what exactly causes it and correct it according to the doctor’s advice. Higher than 170.1 is on the high side, but not the higher the better, too tall may be excessive secretion of growth hormone resulting in gigantism. 156.1 to 163.5 is medium; 149.5 to 156.1 is lower than medium, may be lack of nutrition in the process of growth and development, usually pay attention to supplementation; 163.5 to 166.8 is medium to high. If the height of a 15-year-old girl is lower than 149.5cm, she can go to the hospital for a relevant examination, if the epiphysis has closed, she can’t grow taller, but if the epiphysis has not closed, she can grow taller. You need to eat a reasonable diet, ensure nutrition, and at the same time participate in sports, maintain a happy mood, ensure sufficient sleep.