Abstract: At the 75th UN General Assembly in 2020,China solemnly promised the world to strive to achieve carbon peak by 2030 and carbon neutrality by 2060,as a responsible great power.According to Accounting Method for Economic Value of Marine Carbon Sink,marine carbon sink refers to the process,activity and mechanism of absorbing and storing carbon dioxide from air or ocean,such as mangroves,salt marshes,seaweed beds,phytoplankton,shellfish,and macroalgae.Among them,shellfish and algae carbon sink are the main component of fishery carbon sink,and shellfish and algae mariculture are important manifestation of carbon sink function.At present,the production of mariculture shellfish and algae in Fuzhou has always been in the forefront of China,with congenital advantages in developing fishery carbon sink.In addition,since 2022,the development of fishery carbon sink in Fuzhou has been a pilot project,which has achieved many breakthroughs,with huge potential.Based on the current status of shellfish and algae mariculture in Fuzhou,the total amount of fishery carbon sink in recent 10 years was calculated,and the amount of fishery carbon sink in the next 5 years according to the growth trend was predicted in this paper.Compared with other successful cases of marine carbon sink development,the potential of fishery carbon sink in Fuzhou was analyzed,while the existing problems,countermeasures and suggestions were put forward according to local conditions,aiming to provide references for government policy formulation,in order to seek a practical development path for fishery carbon sink.