Abstract: In China, the potential of marine geological carbon storage is huge and the main target areas for carbon storage are well matched with the main carbon dioxide emission sources, which could provide an important way to achieve carbon neutrality. The authors of this paper have analyzed the necessity of marine geological carbon sto-rage and introduced its research progress at home and abroad. And the studies on regionalization, synergism of carbon storage and resource utilization, database construction and implementation of the demonstration projects of carbon storage have been pointed out to be the next working emphases. This research could provide data support and technology stock for carbon neutrality in China.