The realization of the criminal policy of temper justice with mercy in the implementation of the penalty of prison;

As the theories studies developing, the distance between the theories and the practice of the supervision systems of penalty enforcement is increasing.

So it is necessary to guide the reform of prison execution and make the criminals communicate with society as closely as possible duing their serving sentence in order to decrease their personality of "prisonization",gra.

In order to rea lize this, it s supposed to establish perfect prison legal system, to foster the qualified prison officers, and to construct special prison legality sector and the modern prison execution system.

Foreign legislation and practice has proved that it is suitable to apply the restorative justice in the prison execution.

Parole,as an execution of punishment system of long history,has profound theoretical elements,which is the expression of subjectivism,doctrine of special defence,educational theory of modern school criminal affairs in the execution of punishment system.

But as an activity of the execution of punishment,it is strongly comprehensive.

From 1850s to modern times, there has been great progress in the concept of execution of punishment, which is the prison, is no longer a place just for detention and punishment, but a one for rehabilitating offenders, and the society also play an increasingly important role in culprits’reintegration.

Issues such as render- ing meritorious service in measuring penalty and classification of meritorious services in penalty execution,classifica- tion of meritorious services of surrendering criminal and non-surrendering criminal,and classification of common meritorious service and major meritorious service and other types are discussed.

The current penalty execution system in China has certain defects,which greatly affects the efficacy of penalty execution and is not conductive to the realization of crime prevention.

This thesis with effecting penalty purpose and protecting human rights of criminals as starting point,beginning with basic theory of penalty execution supervision,expounds the necessity of establishing concrete penalty execution supervision legal system in China and its status in the whole jurisprudence.

On the basis of the reconsideration of major concept of community correction,this article analyzes the attributes of community correction and regards community correction as a penal execution system which has both attributes of penal execution and social work,then reconstructs the concept to make it in accordance with the judicial practice in China.