The rise of a new round of scientific and technological revolution promotes digitalization，intelligence，networking and greening to become the general trend of social and economic development，the potential of digital value is stimulated，and the concept of green development is affirmed. This report analyzes and prospects the green development of digital economy in 2021 in China from three parts：the development status of digital economy，the basic logic and challenges of green development of digital economy，and the policy suggestions of strengthening green development of digital economy. The report found that in the context of the global digital economy in full swing，the overall scale of China’s digital economy is expanding，the development of digital economy shows regionalization，digital industrialization and industrial digitalization have achieved remarkable results，and the appeal of digital economy to help green development is constantly strengthening. It is pointed out that the digital economy contributes to green development by improving the matching degree of supply and demand and production efficiency，helping to upgrade industrial structure，optimizing the level of resource integration，and enabling precise management of government affairs. It is believed that digital economy is facing challenges such as unbalanced and inadequate development of digital economy，imperfect governance system of digital economy，insufficient integration with traditional industries，and responsible international competition situation. To strengthen the digital economy to promote green development，we should focus on strengthening top-level design and factor supply，improving governance systems and mechanisms，steadily promoting the digital transformation of traditional industries，and strengthening international exchanges and cooperation.