Abstract:At the present,as the problem of the ecological environments becomes serious day by day,Ecologica Economics is paid more and more attention to and discussed.While it is often understood as a field of applied type in academic circles in China using theories and methods of mainstream economics to explain and solve the issues of ecological environments,Ecological Economics in the eyes of international researchers,is to rethink the theories and method of mainstream economics,and rebuild a new comprehensive development theory and action principles towards economic growth,society justice and ecological scale,and therefore regarded as economics and management science of sustainable development.This paper,by summarizing the main achievements of ecological economics research since the 1970s in the world,identifies the five differences of Ecological Economics from New Classic Economics as mainstream,and on this basis pointes out the theoretical and policy significance of the research of ecological economics for the transition of China from economic growth to scientific development.