Abstract: The establishment of national parks system with Chinese characteristics is one of the fundamental goals of national parks construction in China. The system of national parks with Chinese characteristics must be supported by a distinctive environmental ethics system. This paper aims to discuss the choice of environmental ethics and the practice of localization of national parks in China. Firstly, the influence of wilderness thought on the establishment and management of American national parks is analyzed, and then the choice of environmental ethics of Chinese national parks is studied. It is believed that the limitation of wilderness thought and the particularity of Chinese culture, history and reality make China unable to follow the guidance of wilderness ethics to build national parks. Finally, the paper puts forward the construction of the local environmental ethics of China's national parks from the conceptual and behavioral levels, and proposes corresponding suggestions, such as taking "harmony between man and nature" as the driving force, taking ecological civilization as the guide, using traditional ecological knowledge and ideas to promote the protection of national parks, and carrying out environmental education.