Spatial structures are used as evacuation facilities and aid stations when a large earthquake occurs. In order to ensure sufficient seismic performances. Therefore, there are studies on free vibration characteristics of existing structures and effects of roofing members on damping factors. However, the effects of differences of flexural rigidity of roofing members and coefficients of friction between roofing members and lattice members on free vibration characteristics have not been sufficiently investigated. From these backgrounds, these effects on free vibration characteristics and seismic response behavior of cylindrical lattice shell roofs under horizontal motions are investigated by shaking table tests.