Global warming has brought the issue of ocean acidification.Impact of ocean acidification on the marine environment has gradually attracted attention from the international scientific community.The state of the global ocean acidification has become a fait accompli.Ocean acidification on coral reefs,shellfish and the entire marine ecosystems are adversely affected.United States,Europe and Japan and other countries have made some research plans on this issue.These plans were designed to understand the mechanism of ocean acidification,the possible effects caused by ocean acidification and countermeasures.