The human brain is an organic whole. Although there is a certain geographical division of labor in function, it belongs to collaborative work as a whole, and there is no distinction between a single rational left brain and a perceptual right brain. The so-called left brain development is actually a gimmick, which aims to confuse and induce parents with little knowledge. "Whole-brain education" is only a means of enrolling students in education and training institutions. A child's IQ cannot be improved overnight, nor can it be accelerated in the so-called training class. Child psychologists point out that if parents are anxious and blindly follow the trend, it will actually violate the normal growth law of children and will only hurt them in the end.