The energy principle was applied into the analyses of seismic response of one steel-concrete composite structure,and the dynamic response of the structure under earthquake load was analyzed by finite element software.The distribution regularity of hysteretic energy between columns and beams, plates,was investigated which took into account the structure damping ratio, peak ground shaking, strong motion duration and other influence factors. The results show that, the input energy is greatly affected by the damping ratio and peak ground shaking, but strong motion duration effect is relatively small. The storey distribution regularity of hysteretic energy is ladder-shaped distribution. The hysteretic energy dissipated by columns increases but the damping energy decreases with the increases of structure damping ratio, peak ground shaking and predominant period; beams and plates are contrary to columns. Ground motion duration has little effect on energy distribution.