Abstract: "The 2018 Symposium on Application of Fluid-Structure Interaction in Naval Architecture and Offshore Renewable Energy" held in January 2018 in Shanghai Jiao Tong University is briefly introduced. The academic reports in the symposium by the invited scientists are reviewed by category. The viewpoint and suggested future focused research directions on the application of fluid-structure interaction in naval architecture and offshore renewable energy in the open discussion session are summarized.