The developmental period for boys is generally 0-18 or 20 years old, from birth to 1 year old for infancy, this period is the fastest growing period, in 1-3 years old for early childhood, physical development is slower than before, but the level of intelligence as well as social behavior will be developed. In the preschool period is 3-6 years old, language, thinking, movement and increasing contact with the outside environment, so that children get extensive development, and the school age is 6-12 years old is equivalent to the elementary school stage, the brain function development is more mature. And from 12-20 years old is puberty, the second growth spurt for boys, which requires more nutrition and comprehensive development of psychological and sexual education, nutrition and health guidance.