After watching the legal education film, I learned a lot about life, what to do and what not to do. It tells many typical real cases of teenagers, tells the tragedy of many teenagers who have gone from innocence to illegal crime, and shows us the ways and methods to prevent and reduce crime. The causes of juvenile delinquency basically come from family education, wrong management system and the influence of the surrounding bad environment. It is the time when minors grow physically and increase their knowledge, and it is easy to embark on the road of illegal crimes because of one step difference. For example, the Internet is a comprehensive achievement of modern high technology, which has created conditions for human beings to share rich science and technology and made great contributions to economic development. But it can also be used as a means or channel to spread harmful information, which corrodes and harms the physical and mental health of teenagers and causes serious harm to society. For example, it takes a lot of energy to make friends online. It is natural to keep in touch with friends. This connection is usually in hours, and the depth of friendship is directly proportional to the communication time. Naturally, it will take more time and energy, which will have a certain negative impact on normal life, and even lead to a tragedy. Therefore, we should strengthen the self-control education of the Internet, consciously build a "firewall" to resist bad information, and make correct use of the advantages of the Internet. In our life, sometimes there will be fights and other incidents due to family conflicts or trivial matters, which will lead to fatal disasters. Therefore, we should learn to be polite, tolerant, calm and rational in handling contradictions and problems, properly solve things, do not be impulsive, and learn the ability of self-regulation and self-control, otherwise it will lead you to the road of crime because of the impulse. Teenagers should improve their own quality in an all-round way, strengthen their self-protection ability and learn how to resist bad influences and temptations. We should understand and master the basic legal knowledge closely related to our lives, enhance legal awareness, establish the concept of the legal system, improve the ability to distinguish right from wrong, consciously abide by the law, use legal weapons, safeguard our legitimate rights and interests, and fight against all kinds of illegal crimes.