Girls may stop growing at around 20 years of age, but the specific situation depends on individual development, nutritional status, genetics and other factors, so the specific age cannot be generalized. Girls’ puberty usually starts at about 11 years old, and the growth period usually lasts about two years, reaching about 90% of the final height at about 13 years old, and then the growth rate will gradually slow down until the epiphysis completely closes, and girls usually stop growing at about 18-20 years old. Specific growth and height and nutritional status and genetics have a great deal to do with, it is recommended that during puberty should pay attention to the nutrition of a reasonable combination, and adhere to the exercise, maintain a good state of mind, it can help physical and mental development.