Mariculture is one of the important marine pillar industries in our country. This article is based on the theoretical connotation of the green development of mariculture industry，17 indicators were selected from four dimensions including economic development，resource utilization，technological progress and ecological environment to construct an evaluation index system，and the index of the green development of mariculture industry in China’s coastal provinces（regions，cities）was calculated by using the combination of analytic hierarchy process and entropy method. On this basis，the temporal and spatial evolution characteristics of the green development level of mariculture industry in 11 coastal provinces（regions，cities）were deeply analyzed，and the coordinated development relationship between the four dimensions of country and three marine economic circles was studied by using the coupling coordination degree model. The results show that：①The green development level of mariculture industry in China has an obvious increasing trend，with higher levels in Shandong Province，Hainan Province and Fujian Province，and the green development level of the northern marine economic circle is the highest. ②Among the green development level of mariculture industry in different regions，the difference of resource utilization level is the largest，the difference of economic development and ecological environment level is large，and the difference of technological progress is the smallest. ③The internal coordination degree of the green development of the national mariculture industry has experienced a process of rising to falling. Among them，the coupling coordination degree between economic development and resource utilization，economic development and technological progress，resource utilization and technological progress is high，the overall coordination level of the northern marine economic circle is the highest，and the southern marine economic circle is the lowest.