In the context of increasingly prominent global concerns about carbon emission reduction and climate change, marine CCS（carbon capture and storage)stands out as a crucial technology in addressing these issues. It is at the forefront of the global scientific and technological efforts to combat climate change.On the basis of studying the development trends of marine CCS in major countries worldwide.It proposes specific measures and suggestions aimed at advancing marine CCS development in Guangdong. These include conducting assessments of submarine carbon sequestration potential, establishing industry norms and standards systems, developing carbon sequestration technology, and implementing pilot demonstration projects,with a view to fostering a new engine of green development in Guangdong.The goal is to assist Guangdong in taking a leading role towards achieving carbon neutrality.