Abstract: The theoretical requirement of developing Marxist ecological ethics， the development requirement of carrying forward Chinese traditional ecological culture and the practical requirement of constructing ecological civilization in the new era constitute the theoretical logic， the historical logic and the realistic logic of Xi Jinping's important exposition on ecological ethics. Xi Jinping's important exposition on ecological ethics is based on the relationship of ecological ethics among the elements of the “life community” as its logical structure. It takes “respect for nature” as its ideological core， “cherishing life” and “caring for the environment” as its ideological subject， and “responsibility and power sharing” as its ideological essence. The logical intention of Xi Jinping's important exposition on ecological ethics lies in putting forward moral philosophy and normative ethics that adapt to the construction of ecological civilization in the new era.

Key words: Xi Jinping, ecological ethics, ecological civilization