The lifetime height of a child with precocious puberty is usually lower than the lifetime height of a normal child in adulthood. The average lifetime height of a girl is 160.6 cm and the average lifetime height of a boy is 172.7 cm. The lifetime height of a child with precocious puberty in adulthood is often lower than the above standard values due to early epiphyseal closure caused by early sexual development, but it is not an absolute value. If detected early and given early intervention or treatment, or if influenced by genetic factors, such as both parents being tall, the child’s height is usually not affected in any way and may be higher than the average height. Clinically, if a girl or boy develops precocious puberty, parents need to take the child to the hospital for skeletal age and gonadal ultrasound to determine if the child has lost height. If there is a loss, timely intervention and treatment, if necessary through growth hormone injections to grow in size, can often achieve the desired height.