Abstract: Many kindergartens have now started to enroll babies in the younger age group (under 3 years old). The admission of younger children to kindergarten meets the needs of working parents at work, but parents can’t help but worry. Does this do more good than harm for the child, or more harm than good? A. Children who enter kindergarten too early are more aggressive Australian child education experts in the book “Raising Children: Should they enter kindergarten under three years old? points out that there is a growing body of evidence to support his theory that children who are removed from their parents early enough to go to kindergarten are more likely to develop aggressive personalities, antisocial behaviors and other psychological problems, and that such children will experience interpersonal problems later in life and will not easily develop close relationships with others. A professor at Oxford University conducted a follow-up study of 1,200 children and found that going to kindergarten too early can seriously affect young children’s brain development, emotional development, social behavior, and cognitive development, in addition to their delayed physical development, all of which are related to not receiving one-on-one family care, so experts suggest that young children should be allowed to grow up in a warm and safe home environment rather than prematurely Put them in kindergarten. If you have a child at home, it is advisable to wait until the child is 3 years old before sending them to kindergarten. Because the child’s own resistance is weakest at the age of 2 weeks, and kindergarten is a public place, even a good kindergarten will not be as good as the one-on-one care at home. The younger the child, the stronger the separation anxiety from parents, and this emotion will affect the child’s feeding, which in turn will affect the child’s resistance and will be particularly susceptible to illness. From the child’s health considerations or 3 years old is better. Three, the best teacher can not replace the mother under 2 and a half years of age to be subject to the mother one-on-one care, parents co-parenting is the most ideal way. If a toddler’s brain is to develop healthily, it needs to be lovingly stimulated, and parent-child interaction is the best stimulus, and it is this influence that is lacking in kindergartens. Even hiring a nanny to watch the child at home is not as good as having the mother take care of the child herself, not to mention that most people are not lucky enough to find the ideal nanny. Researchers at the National Institute of Child Health and Human Development point out that infants and toddlers are special in their development, and that they need not only constant attention, but also concerted attention, which means that the people they communicate with are relatively fixed, and that children are sent to kindergarten too early because most of the day is spent in kindergarten. Children who are not yet mature are unable to adapt, so during the critical period of their psychological growth and development. A recent U.S. study found that no matter how good the daycare is, children who stay in daycare earlier or longer are more likely to exhibit aggressive behavior throughout their elementary school years, the conclusion of one of the most comprehensive studies on child care to date. Four, too early to enter the park light affection parents send their children to the park early in two ways: one is busy work; the second is that they will not take, early to enter the nursery can make the child early education, in fact, this idea is rather biased. The first from the child’s psychological development, before the age of 3 is still in the parent-child attachment stage, it is best to family rearing; should not be too long away from parents, family. 6 months – 2 years old is the child and parents of the special emotional connection stage, until about 2 years old children and peer initiative socialization began to sprout, about 2.5 years old children logic and sense of order gradually established, in order to be able to effectively interact with organizational and life. Since infancy is the best time for early attachment development, premature entry into kindergarten can lead to a strong psychological burden on the child due to lack of mental maturity, limited language development, and lack of emotional regulation, which can have an impact on the child’s ability to build good interpersonal relationships and enter into high level emotional development. Therefore, age-appropriate behavior and education are crucial to a child’s development.