Proportionate Punishment to Crimes(PPTC) is an important principle in the justice,which means to balance the crime and punishment to reach the aim of punishment and education.
It is also pointed out that notwithstanding its deficiencies, imprisonment is still of great value, it is the basic punishment method of the principle of adaptation of crime and punishment of the retribution concept owing to the diversity of its execution forms and separability of execution length.
From the aspect of accident proneness, the author goes on to explain the multi reasons and the complex mechanism of the traffic accidents and points out the objective vales of subjectivism in promoting the control of crimes and the science of prevention.
As the final reason accelerating the formation of the system of the crime-constitution which is a kind of model and grade of conviction of crime, the principle of a legally prescribed punishment for a specified crime becomes the median of criminal quality written in criminal law art ides and the median of standard for judging the criminal quality of law-maker.