Marxist ecological thought believes that human beings are the products of nature and are part of the natural world. While dominating the nature,human beings must be in harmony with the nature. That means people must correctly handle the relationship between man and nature and act according to objective laws.Xi Jinping’s ecological thought is based on its inheritance of Marxist ecological thought.Based on the serious ecological problems currently faced,and based on the scientific experience of socialist ecological civilization construction,through the in-depth practice,investigation and research,Xi has creatively proposed a series of profound and enriching new ideas of ecological civilization,such as the“life community”“the rise and fall of civilization”and“the theory of two mountains”.