The invention discloses an active-passive hybrid seismic control method for a cultural relic and a free-standing platform. The active-passive hybrid seismic control method is first applied to a seismic proof research on preservation of cultural relics. The control method combines an active seismic control technology and a passive seismic control technology, can achieve a control effect superior to one of the active seismic control effect and the passive seismic control effect, and can overcome the defect of only relaying on the active seismic control or the passive seismic control. The influence of seismic waves on the cultural relics in a sudden earthquake is reduced, and the cultural relics are not overturned, do not glide and are not impacted, so that the integrity of the cultural relics is protected. The control method is mainly used for inhibiting vibration transmission in the horizontal direction, that is, transverse waves in the seismic waves. The propagation velocity of the transverse waves is lower than that of longitudinal waves in seismic waves, but the damage effect of the transverse waves is much higher than that of the longitudinal waves. Active control of the X direction and the Y direction, which are orthogonal, in the horizontal direction is realized, the horizontal acceleration component, the velocity component and the displacement component, which are transmitted to the cultural relics by the transverse waves, are effectively controlled and inhibited through active vibration, vibration of the cultural relics is reduced, and the safety of the cultural relics is protected.