Abstract: With the proposal of the ‘3060’ target, wave energy, as a sustainable and clean energy source, is receiving increasing attention. Based on this, this paper establishes a wave model for Jiangsu sea coast and analyzes the wave energy resources from 2021 to 2023. A preliminary study is conducted on the spatial distribution of wave energy flux density, effective wave hours, and seasonal variation index along Jiangsu coast. The results show that: the annual average wave energy flux density along Jiangsu coast ranges from 0 to 11 kW/m, with effective wave hours varying between 0 and 6 000 hours. The wave energy flux density and effective wave hours are relatively high in the deep sea beyond the Yangtze River Estuary, while they are relatively low within Haizhou Bay. The closer to the open sea it is, the higher the wave energy flux and effective wave hours will be. The lower the latitude is, the more increase of the wave energy flux and effective wave hours to the outer sea will be. The seasonal variation index along Jiangsu coast is mostly concentrated between 0.5 and 1.0, with relatively higher indices observed in the offshore areas from the southern side of Haizhou Bay to the northern side of Yangkou Port, as well as in the deep sea areas outside the Yangtze River Estuary. This study can provide references for the development and utilization of wave energy resources, as well as the location selection for wave power stations, in Jiangsu and other sea areas.