Building ecological civilization is a millennium plan for the sustainable development of the Chinese nation. In order to maintain global ecological security, build a beautiful China, create a good production and living environment for the people, and achieve the goal of adhering to the harmonious coexistence of man and nature, we should get a better understanding of the laws of nature and respect the planet. To respect the earth and regulate human behavior, we must realize and adopt the concept that lucid waters and lush mountains are invaluable assets, adhere to the basic national policy of prioritizing resources conservation and environmental protection, and take the ecological environment as our lives. The principle of recovery is to let nature restore itself, develop spatial layouts, industrial structures, way of work and life that can help conserve resources and protect the environment. With this, we can make the earth a natural, harmonious and beautiful home for mankind.