Abstract: Environmental conflict islikely to induce the risk of social stability,and easily transmitted to political field,forming the political risk of environmental conflict.In order to effectively prevent the political risk of environmental conflict,a triple mechanism of blocking,isolation and resolution is formed according to the evolution process and characteristics of risk.Combined with the operation of the triple mechanism presented in the project construction case of the municipal solid waste incineration plant in X County,the applicability and effect of these three mechanisms are proved.The research shows that the political risk blocking mechanism of environmental conflict effectively controls the objective project risk and public perceived risk,and controls the "transformation point" of sudden risk;the isolating mechanism realizes the "in-situ delineation" of administrative risk,grass-roots risk and regional risk;and the resolution mechanism breaks the continued transmission of the "risk chain" by means of emotion,administration and the rule of law.These measures block the transformation of risks,isolate the cross-infection among risks,and realize the effective resolution of the political risks of environmental conflicts.

Key words: political risk of environmental conflict, environmental conflict, realization mechanism, case study