The short-term surface carbon cycle on the Earth's surface affects global climate change and the Earth's livable environment. More than 90% of the carbon content is stored in the deep Earth. The long-term deep carbon cycle in the Earth's interior has an important impact on the surface carbon cycle. Studying the deep carbon cycle has an important indicator significance for the surface carbon cycle. The carbon cycle is one of the most cutting-edge issues in the interdisciplinary field of geoscience. This paper presented a brief overview of deep carbon cycle in different tectonic backgrounds, such as convergent plate boundary, discrete plate boundary, intraplate environment and new type seamount, and expounds the scientific problems that need to be studied in depth in the future, which may cause the peer to pay more attention to the relevant research of deep carbon cycle, such as decarbonization mechanism and efficiency of subduction zone, and the existing form of carbon in mantle, et al.

subduction  /  magmatism  /  deep carbon cycle  /  climate change