Abstract: The twenty-first century is an ocean century, people are concerning the great importance in the exploitation and utilization of marine resources to the level it has never reached. How to effectively develop and use of marine resources and the development of marine economy with better marine resources and environment protection has become an important strategy in the coastal countries and regions. Therefore, the research of marine ecological economy has attracted widespread attention in academic circles and governmental departments. The construction of marine ecological economics system has great significance for the steady growth of marine economy and sustainable development. Based on the analyzing on the construction system of marine ecological economics from the point views of research object, the content, disciplinary attribution and association, discipline system framework and important branches, the problems of construction discipline system of marine ecological economics are discussed. The scope and the direction of the study are point out. Two and three sub-discipline systems are formed according to the theoretical and applied aspects of marine ecological economics. At last the trend for the marine ecological economics development is also probed.