At present， the marine economy has gradually become a new highland and bright spot for the economic transformation and development of coastal areas.While gaining more development space， the marine economy is also facing greater external challenges， among which the competition from surrounding provinces is one of the main sources of risk， so the coordinated development and prosperous development of the coastal areas is particularly important.In terms of regional coordinate， coordinated development of Beijing Tianjin Hebei region and the Yangtze River economic belt and other national regional strategies have achieved the unification of regional integration linkage and resource optimization allocation. Through facilitation measures to reduce the cost of coordination， the optimization of the benefit sharing and compensation mechanism to enlarge the cooperation dividend.