There are two problems with regard to the structure of Chinese criminal law. Firstly, the crimes that are defined in the Chinese criminal code are approximately equal to the felonies that are defined in the western criminal codes, while re-education through labor and penalty for administration of public security similar to the misdemeanors and violations in western countries respectively are not included in the Chinese criminal code, and meanwhile the security measures have not been systematized. Secondly, crimes and penalties, except in criminal law, can not be prescribed in administrative laws and economic laws, and such single track system of conviction and sentencing fails to satisfy the current social situation in which the number of mala prohibia has increased so much. The way to reform Chinese criminal law structure: Firstly, it is to establish a double track system, where mala prohibia should be prescribed in the related administrative laws or economic laws; secondly, a comprehensive criminal code should be reformulated in which felonies, misdemeanors, violations and security measures are all included.