The famous psychologist Freud believes that people have the instinct of survival and the instinct of death. The instinct of survival is that they will use all kinds of means to protect themselves from being violated, while the instinct of survival is that they make people The impulse to attack and destroy. This impulse tends to aggression and destruction, and tries to bring the individual to death. Only death can completely end the tension and struggle. The same is true for crime. The object of destruction is transferred from oneself to others. When the attack drive directed to the outside world cannot be satisfied due to obstacles, it will turn to attack itself in an attempt to self-destruction.