The physical development of children is rapid; for example, infants can weigh twice as much as they did at birth at 2 to 3 months of age, and their height is generally about 1.5 times that at birth by the time they are a week old, growing about 10 cm at 1 to 2 years of age, and then about 5 cm per year. As their bodies grow, their activities and range of activities also expand rapidly, which inevitably requires more nutrient intake to ensure growth and development needs. The growth and development rate is wavy, with different growth rates for different parts of the body Human growth and development is not uniform, but wavy. Puberty is another growth spurt outside of infancy and is a critical period of transition from childhood to adulthood, when physical growth accelerates and nutritional follow-up is essential. Each part of the body develops differently before and after, with the limbs developing before the trunk and lower limbs before the upper limbs. Growth and development is a continuous process Growth and development is a continuous process, forming different fast and slow stages, and each stage is mutually influencing, interlocking, any one stage of development is obstructed, will have a negative impact on the latter stage, so any period needs to have quality and balanced nutrition as a backing, in order to lay a solid foundation for development. The brain basically completes differentiation at the age of 3, after which it is still developing continuously The state of brain development is the fundamental basis of children’s intelligence, before the age of 3, the development of the brain’s nervous system is very fast, and at the age of 3 the brain’s nerve cells largely complete differentiation, after which the brain is still developing continuously, and must be supplemented with appropriate nutrition to ensure the normal development of children’s brain.