Abstract: Modern risk can be divided into external risk and man-made risk.The environmental risk of carbon emissions is the result of both exogenous and endogenous factors,but human behavior is the dominant source of the risk.The increase of carbon emission concentration caused by human factors,the accumulation of carbon emissions or carbon emissions out of control may lead to the aggravation of air pollution,the threat to ecological security and the threat to public health.To prevent the risk,the state has successively launched the pilot carbon market and the national carbon market in order to achieve the purpose of preventing the environmental risk of carbon emissions by regulating the behavior of enterprises controlling carbon emissions in the carbon market.This paper analyzes its inherent logic,and the behavior logic of emission control enterprises and the formation mechanism of carbon emission environmental risk in the context of carbon market.It is concluded that the carbon emission environmental risk caused by the behavior of emission control enterprises in the carbon market has the characteristics of the diversity of harmful consequences,the indirectness of causality,the particularity of the subject and its behavior,and the complexity of interest relationship.However,the regulation concept and legal system of the current environmental law cannot effectively respond to this special risk,which is manifested in the current risk regulation concept's ignorance of the role of value,and the problem of fragmentation in system design.In view of this,the concept of regulation should be updated to effectively regulate the environmental risk of carbon emissions,taking into account the scientific and cultural aspects,fact and value,objective and subjective aspects of risk generation,and scientifically and reasonably construct the corresponding risk assessment,management and communication system.

Key words: carbon emission, carbon market, behavior of emission control enterprise, carbon emission environmental risk, environmental administrative regulation