The Party's 20th report made major arrangements for "promoting green development and promoting harmonious coexistence between man and nature", stressing that it is necessary to firmly establish and practice the concept that green water and green mountains are golden mountains and silver mountains, and to plan development in the height of harmonious coexistence between man and nature. Properly handling the relationship between ecological and environmental protection and development is an inherent requirement for achieving sustainable development and a major principle for promoting modernization. The concept of clear water and green mountains is gold and silver mountains profoundly reveals that protecting the ecological environment is protecting productive forces, and improving the ecological environment is developing productive forces. Marxism believes that "man lives by nature", and nature not only provides human beings with sources of living means, but also provides human beings with sources of production means. Clear water and green mountains are gold and silver mountains, which deepens Marxism's understanding of the dialectical unity relationship between man and nature, production and ecology. Protecting the ecological environment and accelerating the green transformation of development mode can stimulate greater innovation momentum and broader market space, enhance sustainable productivity, and greatly promote the development of science and technology and green consumption. The concept of clear water and green mountains is gold and silver mountains profoundly clarifies that protecting the ecological environment is to protect natural value and increase natural capital. Plants into, the country is rich. Good ecology contains endless economic value, can continuously create comprehensive benefits, and achieve sustainable economic and social development. There is not only the value of the forest itself, but also the green lung effect, which can bring tourism and forest economy. Clear water and green mountains are Jinshan silver mountain, which is actually value-added. The concept of clear water and green mountains as gold and silver mountains deeply explains that protecting the ecological environment is to improve people's livelihood. The environment is the people's livelihood, the green mountains are beautiful, and the blue sky is happiness. The mountains and forests are dyed, the plains are mixed with blue and green, and the flowers and birds in urban and rural areas bring people beautiful enjoyment. This ecological advantage cannot be exchanged for gold. Clear waters and green mountains are an important guarantee for the health of the people and are the common wealth of the people. We should let the people enjoy the beauty of nature, life and life in the clear waters and green mountains.