Prison subculture is the sum of the unique values and behaviors of prison inmates, and it is the inmates' own culture with strong vitality. Taking prison subculture as the main line, this book describes the prominent cultural phenomena of prison subculture, such as bullying, suicide, violence, man-made injury and pseudo-disease, sex and tattoos, analyzes the manifestations and existing conditions of prison subculture, and probes into the methods to solve the problems of prison subculture. The author tries to find a solution to the problem of social crime and punishment in China through the study of prison subculture.