In recent years，the situation of telecom network fraud crime is very serious，and young people have become the main victims. The qualitative study found that the inferior field game，inertia and no resources confrontation are the pre-factors of young people being cheated，but the misperception throughout the whole process of the young victims’ suffer from telecom network fraud practice is the core. Misperception is a kind of belief state established by the young victims on the field of telecom network fraud，the misperception of the young victims is embodied in the misperception of the illusion at the stage of the entrance，the misperception of the rules at the stage of the scammer’s struggle for legitimacy，and the misperception of the symbolic power at the stage of the scammer’s capital plunder. Misperception is not only the cause of the young victims’ physical operation，but also the reason for the long-term maintenance of the field structure. Therefore，it is necessary to prevent and eliminate young people’s wrong understanding of telecom network fraud from the perspective of subjectivity，and improve their security situation and rational thinking.