Abstract: The Qizhou Islands, located on the east side of Hainan Island, is an area with a high risk of geohazards, due to the influence of tectonic processes (e.g. active fault zones and Hainan mantle plumes) and related earthquakes. The southern part of the Qizhou Islands is close to the edge of the continental shelf, with well-developed canyons and ancient channels, which weak seabed stability and threat the safety of engineering facilities in the area. Therefore, studying on marine geohazards is of great significant for disaster prevention and reduction in the Qizhou Islands area. However, research on geohazards in the sea area is limited and the development characteristics of geohazards elements are unclear. [Objective] To clarify the potential risks of marine geohazards in the Qizhou Islands offshore, [Methods] based on 2D seismic data, [Results] this study has identified 6 geohazards elements (volcanoes, faults, shallow gas, mass-transport deposits (MTDs), canyons, and channels) in the Qizhou Islands offshore. According to their quantity, scale, and distribution characteristics, three risk levels (low risk, medium risk, and high risk) were divided into 12 blocks. [Conclusion] Combined with the geomorphological and tectonic characteristics, suggestions for geohazards prevention and control were proposed for the Qizhou Islands offshore area.