To address climate change, major countries/regions are encouraged to launch green New Deals facing carbon neutral long-term vision by 2050. Based on the DIIS think tank research theory, the study constructs a three-dimensional model framework of policy analysis of essential policy tools, industrial development cycle and technological innovation. It quantitatively analyses the policy content of carbon-neutral and green new policies in developed countries/regions. It reveals various countries main characteristics and development trends of carbon-neutral and green actions in. It is found that countries lay particular stress on the use of supply-oriented and environmental policy tools, while demand-oriented policies are lacking, and the tax mechanism, long-term binding force and pulling policy of their green new policy are insufficient. Most policies focus on the stage of technology development and demonstration and large-scale application, while there are few supporting policies for basic research and experiment; Carbon emission reduction technology and digital cross-technological innovation have become the focus of green new approaches in various countries, while there is a big gap in policy support for negative emission technology. It is suggested to continue to strengthen the intensity of green capital investment in the goal of carbon peaking and carbon neutrality, make appropriate use of policy tools of supply promotion, environmental support and demand-pull, and increase the application support of renewable energy, electric vehicles and other competitive clean industries. We will promote the orderly development of key future industries in the early stages, such as resource recycling, decarbonization of industrial processes, green hydrogen, zero-carbon ships and aircraft, and strengthen technological innovation in carbon reduction, negative emissions and cross-cutting fields.