This paper classified the marine industry according to the "Marine and Related Industry Classification" (GB/T 20794-2006) and the "Marine and Related Industry Classification" (for investigation), etc., based on the input production table of Zhejiang Province over the years, using the stripping coefficient method, and comparing the "Marine and Related Industry Classification" "National Economic Industry Classification" table, and finally compiled the input-output table of Zhejiang Province′s marine economy from 1997 to 2017, including 32 sectors (13 major marine industries and 19 land industries) . At the same time, in order to explore the dependence relationship between marine and land industries in Zhejiang Province, this paper used the input-output model to analyze the correlation and ripple effect of marine industries on the input-output table of marine economy in Zhejiang Province over the years. The results showed that the marine industry in Zhejiang Province was most closely related to the land secondary industry, followed by the land tertiary industry. Uneven development between the marine industries in Zhejiang Province. It is urgent to increase support for the land-sea linkage development of Zhejiang Province, pay attention to the flow of land-sea resources, complementary advantages, and the innovation and application of marine technology, further optimize the structure of the marine industries, accelerate the formation of a modern marine industrial system, and further promote high-quality development of Zhejiang Province.