By using ANSYS finite element analysis software, a static analysis has been made of the long-span steel-concrete hexagonal honeycomb hollow sandwich floor structure, followed by a study on the influence of shear key height on its static bearing capacity. The results show that the maximum deflection occurs near the mid span of the floor. Subsequently, a further study is to be carried out of the influence of shear key height on the bearing capacity of the floor by using the finite element method under the condition of sole change of the shear key height intended for a specific model. The results and analysis show that with the increase of the shear key height, the floor height increases, and the stiffness is improved; while with the shear key height increasing to a certain extent, the increase of the shear key height on the floor bearing capacity is not so noticeable.