Abstract: National Park is the key carrier of the construction of ecological civilization in the new era and the important crystallization of the harmonious coexistence of humans and nature. A national park is a prime example of natural existence. It is a paradigm of nature reserves that effectively connect nature, ecology, environment and people, and its inherent natural value is the core essence that underpins its connotation. Natural value is the cohesion and interpretation of human beings on all the existences in nature and their need for the overall existence and usefulness of meeting the overall existence of the earth's ecosystem. The new habitat philosophy reflected from the natural value is the philosophical basis for grasping the integration of national parks into the construction of ecological civilization in the new era. New habitat is a field that revolves around the harmonious integration of natural life and the earth's ecology, and it is also a new realm that reflects the effective restoration of native ecosystems and integration into nature. The philosophy of new habitat is a dialectical reflection and philosophical interpretation of the existence and development of new habitat. To protect the natural value of national parks, it is necessary to extract the logical relationship between human beings, parks, land, ecology and nature and their ethical principles from the connotation of the new habitat philosophy. It not only absorbs the moral elements of the natural values, but also understands the meaning and value of the existence of all life in national parks from the goodwill actions of human beings to revere nature. Guided by the new habitat philosophy, the process of promoting the protection of the natural value of national parks must follow the four principles of nature first, system integrity, pluralism and symbiosis and beauty cycle, so as to maintain and realize the authenticity and integrity of the national park's ecosystem and natural cultural heritage.