This paper studies the seismic performance of a steel frame with autoclaved aerated concrete (AAC) walls through full-scale shaking table tests. In the tested single-span two-storey steel frame, two types of AAC walls, AAC panel, and AAC block masonry wall, were adopted. Damage distribution and progress, acceleration and displacement responses, and the effect of window openings and corresponding strengthening methods were investigated. Test results showed that good seismic performance of the model structure was achieved with using both types of AAC walls, the connection used between AAC walls and steel structure was reliable and the reinforcement applied for the wall near window openings was found effective. K E Y W O R D Sautoclaved aerated concrete wall, block masonry wall, connection, seismic performance, shaking table test