Abstract: Climate change is one of the universal concerns faced by the international community, which has a profound impact on all aspects of the natural social and economic system. This paper reviews the major strategic plans and policy measures in the field of climate change science and technology since 2016, and summarizes the major research frontiers and advances as well, in order to understand the international development trend of climate change science and technology. As the international community’s consensus on the facts and causes of climate change becomes increasingly unified, the international actions to address climate change continue to deepen. From 2016 to 2019, the international community’s strategic layout and research investment in low-carbon innovation kept increasing. The phenomenon of global warming hiatus and its causes, the attribution of climate change to extreme weather events, carbon removal technology and CO2 conversion and utilization are hot topics of research in this field. Based on the analysis of the international development trend in the field of climate change science and technology, it is proposed to increase investment in scientific and technological research related to climate change, pay more attention to the deployment of social demand-oriented climate observation systems, and develop a research agenda for negative emission technologies as soon as possible, hopefully providing a reference for China’s innovation decisions in related fields.

Key words: Climate Change, Scientific Research Input, Strategic Layout, Development Trend, Net-zero Emissions