Abstract:The marine ecosystem is the natural systems of diversity constituted by the interaction of marine biological community and its environment in the ocean.This paper introduces the research progress of the diversity of marine ecosystems at home and aborad,and combined with the problems of China existing in this area,the leading academic thinking and research priorities were also presented for the diversity of marine ecosystems in order to provide a scientific basis for the development strategy of marine further implementation of the marine environmental protection and sustainable development of marine industry in the recent period.