The cities of Nantong， Yancheng， and Lianyungang in Jiangsu Province were classified as marine cultural region because of their proximity to the Yellow Sea. Although there are many differences in cultural characteristics such as folk customs， dialects， and diets among these cities， this cultural region can be established when the economic production mode is used as a standard of division. Due to the great historical changes in the coastline， the Jiangsu marine cultural region in the historical period is different from today. The exploration of marine culture cannot be confined to today's coastal cities， it should also include past coastal cities such as Suzhou and Taizhou， and further look at the entire province， the country， and the world.