2-year-old girls are 77.3-98cm tall, with an average height of 87.2cm and a weight of 8.7- 16.77kg, with an average weight of1/0/.92 kg. The standard growth law of children's height is that full-term children are 50cm long on average, 25cm long in the first year after birth and 75cm long in the first year. So the height of a 2- 12-year-old baby should be equal to the age multiplied by 5+75cm. Anyone whose height is above the standard 10% or below 10% is considered to be stunted. The standard weight formula for a 2-year-old baby is 2- 10-year-old weight. Kg = age ×2+7, or +8. So what if the 2-year-old baby's height and weight are not up to standard? The best way is to improve through exercise, such as jumping, running, floor exercise, swimming, playing basketball, volleyball, skipping rope and pull-ups, which can help the baby improve. However, considering the baby's age, parents should choose the exercise mode suitable for the baby and don't force the child too much. If the child is short of calcium, you can also give the child appropriate calcium tablets.