 We developed a method that combines Sentinel-2 and Sentinel-1 data to produce a high-precision Chinese mariculture distribution map with an overall accuracy of 94% and a Kappa coefficient of 0.91. The results show that the total area of mariculture was 1,173,249.22 hectares on the national scale, with Shandong Province having the largest proportion. Mariculture is centralized in the coastal zones of northern provinces and presents a spatial distribution characteristic of Dense North and Sparser South. The official production statistics and remote-sensing-derived mariculture area reveal a highly corresponding trend at the provincial level, with an R2 reaching 0.78. These results provide data reference for mariculture production estimation and site selection or ideas for mariculture extraction in other regions and globally. This article was authored by Seol Yong Liu, Jiu Wan, Seol Mai Young, and others. We are article.tv, links in the description below.