The critical period of educating children refers to some periods in the process of children's growth, and education in this period has an important impact on children's growth and development. According to experts' research, children's growth has eight critical periods, namely, the critical period of sensory development (0-3 years old), language development (0-6 years old), order standardization (2.5-6 years old), motor coordination (1.5-6 years old) and social and emotional development (3-6 years old).