The prison people’s police, as an important part of the state judicial and administrative force, undertakes the task of executing the penalty, implementing the judgment of the people’s court, transforming the criminals into lawabiding citizens, and realizing the fundamental purpose of the penalty. In the execution of criminal punishment, the prison people’s police are not only the implementers of criminal punishment, but also educators, and organizers of labor production. In the process of prison modernization, facing the new situation and new tasks, in order to realize the system upgrade from “can be locked up” and “can not run away” to “reform well” and “no more offenders”, the prison people’s police need to have a belief in reforming people, in order to do a good job of reforming criminals with heart and feeling, and promote the high-quality development of prison undertakings.