According to our country criminal law 78a the provisions of the first paragraph of article refers to the commutation,was sentenced to public surveillance,criminal detention or fixed-term imprisonment,and life imprisonment in criminal punishment,and shown true repentance or rendered meritorious service due to its original punishment,thus the system shall be appropriately reduced.That is a kind of commutation of punishment c - or receive a service behavior modification,according to the judicial incentive system,the ultimate aim of education and punishment on the punishment of the fundamental characteristics of the reform of prisoners,improve the enthusiasm,and great saves judicial costs,and the punishment of c - meritorious service recognition and inspiration,accelerate the transformation efficiency.Then we also find commutation system against torture,repay the kindness for prisoners to victims can be regarded as the cruel,plus the judicial procedure and the existing problems of determination conditions in safeguarding judicial justice is weighed in with adjustment.So from a legal point of view,the commutation of scientific and perfect the system of management,so author is urgent to many problems and puts forward some personal research proposals.