Abstract: National parks are one of the new types of nature reserves, and they play a dominant role in China’s nature reserves system. Environmental ethics in the new era is the fundamental norm for the building of ecological civilization in national parks. Ecological citizens who master environmental ethics in the new era are positive energy groups that promote the construction of national parks. Starting from the connotation of national parks and environmental ethics, this paper analyzes the driving role of environmental ethics in the new era on the construction of national parks, and interprets the cultivation of ecological citizens as the main significance of national park construction. It has important implication to the construction of ecological civilization in China. It also provides different dimensions of ecological thinking and cognition for the better construction of national parks in China.