1. Infant (0-2 years old): This stage is the fastest development period of the baby's body and brain, which requires adequate nutrition and care.
2. Early childhood (2-6 years old): This stage is an important period for children to start learning language, cognition and social skills, and parents should pay enough attention and guidance.
3. Preschool (6- 12 years old): This stage is the preparation period before children enter school. Parents should help their children to establish good study habits and living habits.
4. Primary school (6- 12 years old): This stage is the period when children formally enter school, so parents should pay attention to their children's academic performance and mental health.
5. Adolescence (12- 18 years old): This stage is a period of great changes in children's physiology and psychology, and parents should give their children enough support and guidance.