Based on the panel data of 11 coastal provinces(municipalities directly under the governance of central government)in China from 2011 to 2020,we constructed an indicator system for high-quality development of ocean economy from six dimensions including comprehensive economic strength,degree of scientific and technological innovation,level of coordinated development,capacity for sustainable de-velopment,level of opening to the outside world and improvement of people's livelihood.We used the AHP-entropy weight TOPSIS method to calculate the high-quality development level index of the ocean economy,and discussed the current situation of the high-quality development of the marine economy of China.On this basis,the Theil index and Moran index were used to discuss the regional differences and spatial correlations of high-quality development of the ocean economy.We found that the high-quality development level of the ocean economy of China shows a fluctuating upward trend.The main source of the overall difference in the high-quality development of ocean economy was the regional difference,of which the difference in the southern ocean economic circle was the most significant.There was a signif-icant spatial positive correlation between the high-quality development level of the ocean economy of China,and the provinces and cities with the same high-quality development level showed a certain de-gree of agglomeration in space.
high-quality development of ocean economyindicator systemdifference analysisTheil in-dexspatial correlation