Abstract: Real-time dynamic hybrid testing (RTDHT) is a novel testing method coupled of physical substructure testing and numerical substructure calculation. In this paper, a RTDHT testing system based on shaking-table is developed and its dynamic response properties are analyzed. The testing system was applied to a two storey rigid frame to test its vibration properties and seismic responses. A specimen containing only the first storey was made, while the behavior of the second storey will be simulated numerically. The whole structure responses were obtained through alternating of the two parts in real time. Testing results by the developed RTDHT testing system were compared with exact results by CDM numerical calculation. It was found that the two methods yield almost identical results. It can therefore be concluded that the structure responses can be obtained precisely by the developed RTDHT testing system.