Abstract:Though risk criminal law theory is recognized by the legislature, it is widely criticized in the academic circle. The reason lies not only in the critics? misunderstanding of the theory of risk society, which is the origin of the theory of risk criminal law ,but also related to the immaturity of the construction of risk criminal law theory. The key word of risk society theory is "risk", which is identical to "danger" in criminal law, so it determines the feasibility of grafting risk society theory and criminal law theory. Therefore, the basic paradigm of risk criminal law is that the intervention point of criminal law is not the actual violation of legal (interest), result but the possible violation of legal interest (danger) ,which will lead to both expansion of the function and regulatory scope of the criminal law. To avoid the negative effects of the penalty by risk criminal law ,it is necessary to prevent the"risk "of its own ,and to precisely measure and evaluate the risk of behavior, so as to decide whether it should be criminalized and allocated a corresponding penalty. Risk criminal law is only a supplement to classical criminal law, rather than a complete replacement. Thus, the coexistence of the two patterns will be a common phenomenon in modern criminal law.