Network virtual space breaks down the barriers of time and space, enabling people to create exhibitions to perform with the help of various fragmented information and commercial symbols. As the most used social software in recent years, WeChat, an acquaintance interaction circle, provides a field for young people to observe the evaluation and reaction of "acquaintances". In this new field, users represented by young people borrow characters, images, expressions and other symbols in their circle of friends to present themselves differently from real life. With the deconstruction of narcissism in the new media era, narcissism is not only a pathological personality disorder, but also a common personality trait with performance characteristics. Starting from narcissism, this paper discusses the characteristics, internal and external causes and consequences of narcissism among young people in the circle of friends, and puts forward some suggestions to help young people maintain a moderate degree of narcissism.