Having been serving in the jail for more than ten years,the criminals with severe punishment are doomed to suffer a series of psychological problems due to the separated and harsh conditions of the jail where they only have a simplistic and firm relationship with the police officers who are in charge of them.

Objective To study the personality traits of felons and their relevant factors, and to recommend for criminal psychological correction and crime prevention.

However,the children of the female felons have not received proper protection in terms of their rights and become the members of the weak group.

During the period of social transition, criminal offense keeps rising and takes on the following features: exact motive of offense; adequate preparation; professional offending methods; armed offending group; complicated offending process; modern offending equipment; generalization of anti-investigation tricks.

Based on high starting point and high efficiency net system,criminal offense information controlling system consists of five information controlling patterns:criminal cases? offenders? clues for criminal cases? wanted circular and assist investigation and secret investigation.