Man can conquer nature is a slogan that does not respect objective laws. Man's survival depends on nature, and man's survival cannot be divorced from nature. The slogan that man can conquer nature is just ignoring the laws of nature and being arrogant. This slogan was often used during the Cultural Revolution. When the language is spoken, it is bold and unconstrained. Can you really do it? Now this slogan has flown out, because we have realized that human survival can not be separated from nature, and the relationship between man and nature should be harmonious, and human beings can transform nature and achieve "harmony between man and nature." No matter the legendary Dayu Water Control Project, Dujiangyan Project, Three Gorges Project, Yellow River Diversion Project and other projects, they are all embodied on the basis of human respect for nature. Therefore, the slogan that man can conquer nature is naive.