The construction of marine ranch in China focuses on the delivery of artificial reefs. Artificial reefs are divided into sunken reefs and floating reefs. Floating reefs can better fit mucky-soil offshore farming. This article takes frame-type floating body as the research target, and uses finite element method and centralized mass point method to set up hydrodynamic numerical model under wave action, thus to simulate the actual movement of floating reefs in seawater. The movement trajectory, maximum deflection angle and anchor rope force characteristic of the frame-type floating body under different wave heights (1.5, 2, 2.5 and 3 m) and water depths (8, 9, 10, 11 and 12 m) were compared and analyzed; and the impact of tidal levels in target sea area and the interaction of wave elements of floating reefs in the design of floating reefs and its practical application were studied and analyzed. The results showed that: the horizontal displacement distance angle, maximum deflection angle and anchor rope force characteristic of the frame-type floating body increase with the increase of wave height, which is similar to a linear change and decrease with the increase of the water depth. There is a critical depth at which the floating reefs are not affected by waves. The ratio of the distance from the top of the floating reef to the water surface and distance from the top of the floating reef to the depth of water is about 0.5. When this ratio is over 0.5, the change of water depth has almost no effect on the horizontal displacement distance, deflection angle and anchor rope force of the floating reefs. The results of this study provide references for the design and deployment of new artificial floating reefs.