But this merged punishment method can not fully and fairly achieve the legislative intent,violating the principle that "anyone can not be penalized for the same crime again",which leads to cumulative punishment extremely cumbersome.

The original application cases should be analyzed with imaginative joiner of offenses or cumulative punishment.

The determination of the scope of plural crimes is the premise of studying cumulative punishment.

How to punish the person who committed several crimes give birth to the system of combined punishment for several crimes.

At present the major problems in practice of combined punishment for several crimess ystem are mainly followed the 5 aspects:1.

With regard to the action of robbing the victim s possessions in the course of kidnapping crime, Because criminal commits two kinds of completely different criminal requisites facts based on different criminal intents, who should adopt combined punishment for kidnapping crime and robbing crime.

By analyzing the status of implicated offense and joinder of punishments for plural crimes in foreign criminal laws,and by discussing the contradiction on principle of combination of "choosing felony and giving severe punishment" and "joinder of punishments for plural crimes",the writer suggests that,based on actual distinguishing.

The bases of joinder of punishments for plural crimes include the requests of punishment s purpose, criminal law, existence of abolished interests and maximum of executing punishment.

Joinder of punishments for plural crimes is a very important issue both in theory of science of criminal law and in judicial practice, while whether plural crimes of a kind should be given concurrent punishments is even more one of the controversial focuses in the field of science of criminal law.

The issue of the quantification of the concurrent punishment for several crimes refers mainly to the determination of the term of imprisonment ranged from the maximum term of the individual crime to the total term of all the crimes, while the determination is concerned only with the term instead of the plots of the individual crime.

According to the theory of impartiality and utility, the article mainly discusses advantages and disadvantages of the principles of addition, absorption and limitative aggravation of concurrent punishment for several crimes, and claims the principles of absorption and limitative aggravation have more disadvantages than advantages.

The concurrent punishment for several crimes, is the present age various countries criminal activity legal regime important content, it took one of penalty suitable basic systems, in short, is violates the number crime merge punishment to one person the system.