Children are always over-excited, the main reasons are as follows: 1, there may be physiological reasons, especially children’s central nervous system development is not mature enough, some weak stimuli will make children over-excited, and the persistence of the performance of the excitement, the main reason is still because of the central nervous system of myelination has not been completed, so it is easy to appear over-excitement. 2, it is possible that the child is overly The main reason is because the myelination of the central nervous system has not been completed, so it is easy to be over-excited. B1 and so on, these reasons may appear especially easy to excite the problem. If there are any of these reasons, it is important to treat and intervene actively.