Abstract: Without environment human beings cannot produce and live.The recent accidents of environmental pollution have warned people of the danger.The public lawsuit system of environmental protection in our country is based on the two theories of environmental right and the right of environmental lawsuit,and the imputation principle is an important part of public lawsuit system.In applying imputation principle,we should break through the limitation of infringement law,and adopt a system giving priority to liability without fault and supplemented by liability with fault and just liability.

Key words: imputation principle, environmental public lawsuit