Recently, many reports have focused on rural left-behind children addicted to mobile phone chaos. The topic of "How to use smart phones scientifically by children" has aroused discussion again. The latest data shows that in rural areas alone, the Internet penetration rate has risen to 61.9%. Children "touch the net" more and more early. For families of left-behind children, smart phones provide remote companionship and emotional contact functions, and also provide a new window for left-behind children to understand the world. However, there are many hidden dangers brought by smart phones. In the face of games and short videos, left-behind children are addicted to them, which leads to energy loss and performance decline; Grandparents are not able to control their children from generation to generation, and conflicts often arise between "unwilling to control" and "unable to control". For children living in the village for a long time, the appeal of smart phones will only be stronger, requiring multiple intervention and supervision. To deal with the drawbacks of smart phones, we need to block and drain them. It has been more than a year since the most stringent "anti addiction" regulations were implemented, and service providers have also successively launched "youth model" to cultivate healthy use habits. Recently, the State Administration of Radio, Film and Television (SARFT) has studied and deployed to strengthen the management of short videos, pointing out that "it plays a subtle and positive role in shaping sentiment, enlightening mind and leading fashion for minors". Some platforms also try to make short videos of books such as "Three Hundred Tang Poems" and "One Hundred Thousand Why" to spread knowledge in a popular way. Children's socialization is an important link in personality cultivation and social relationship shaping. Children gradually learn to play different roles in families, schools, partners and the Internet. If children bring excessive network personality into their lives, it may lead to anomie of social behavior. We are not only worried about children's achievements and health, but also expect them to grow into "multi-dimensional people". Smart phones should not be the whole life of children. It is of far-reaching significance to enrich the spiritual life of left-behind children and promote the revitalization of rural culture. Children who bow their heads to play with mobile phones are already living in the fields of hope, and they should enjoy a broader space for growth. (Outlook New Era)