In many countries, a high proportion of criminal acts are committed by teenagers. Why has this happ Many countries are facing a thorny problem that teenagers commit a large number of crimes. Resolving this problem is definitely imperative because we cannot expect a future with so many crimes committed by our “flowers”. Such a high proportion of juvenile delinquency demands explanation. Three reasons for it stand out. One of the main causes of this problem is the personality traits of teenagers. Teenagers are more likely to have a sudden impulse to do something wrong than adults. In many cases, small conflicts can lead to serious aftermath. Moreover, as we all know, the sentences to teenagers’ criminal acts are less serious than adults. Thus many teenagers may not have the awareness of keeping their behavior legal. Lacking in the knowledge of the law is also responsible for this phenomenon. In this regard, our society hasn’t done well in the dissemination of the law. To address this problem, schools do well to disseminate more knowledge of the law in schools. For example, schools can hold a series of lectures given by lawyers or law professors to let teenagers have a better understanding of the severe outcomes of criminal acts. What’s more, schools should provide more mental counselling to make it easier for teenagers to vent their anger. In this way, teenagers are less prone to commit crimes. Last but not least, the importance of family should not be neglected. Schools can work together with families to prevent some tragedies. Parents should keep a watchful eye on their children. In conclusion, it is not fair to just blame teenagers for the problem. Many contributors result in this complicated social issue. We should stick together to resolve this problem and create a safer social environment.