Psychological trauma refers to an individual who is experiencing a change in the outside world that brings about a great fear and helplessness. Of course, there is a background, a huge event happened in this environment, we say it is obvious, but in fact, we will find that in real life, it seems that there is no big change, but the trauma still happens. At present, we are more concerned about left-behind children, for example, left-behind children are not able to take care of themselves until they turn 16 years old, so in fact, they are continuously left unattended, very insecure and very afraid of such an atmosphere, which can also cause psychological trauma to individuals. It is not only car accidents, earthquakes and other major social events that can cause psychological trauma.