As a transition point between the continent and the sea, the coastal areas of Hai Hau and Nghia Hung - Nam Dinh province are strongly influenced by natural factors such as geology, topography, climate, hydrology, and soil. especially human activities. Belonging to the buffer zone and transition zone of the World Wetland Coastal Biosphere Reserve, inter-provincial Red River Delta, the dynamic socio-economic development area of Nam Dinh province and the Ninh Co key economic zone, The coastal areas of Hai Hau and Nghia Hung districts are aiming to become the economic development center of the Red River Delta, so this area is creating conflicts in the planning, exploitation, use of natural resources and protection. environmental protection. Geographical approach to research, identify and fully assess the nature and economic functions of the natural aggregates in Hai Hau and Nghia Hung coastal areas in the functional space for service The objectives of socio-economic development, environmental protection and sustainable development of the region have scientific and practical significance.