As one of the world’s four most famous bay areas，the Guangdong-HK-Macao Great Bay Area is characteristic of marine economy which could help drive the development of the bay area itself. Based the good conditions and industrial advantages，the bay area could rely on more innovative methods and ideas to enhance its marine economy，so as to solve various problems harming its collaborative and cooperative development. At the same time，these new methods and ideas could help enhance the overall development of the marine economy in this bay area，thus forming a useful situation in which different parts of the bay area could cooperate with each other better.