The feasibility of isolation protection of a stone Buddha with a heightwidth ratio of 5.6 under seismic condition is discussed in this paper. First, based on standard formulas, the isolation coefficient and bearing stiffness range for the Buddha were determined under seismic conditions. The primary isolation bearings vs. time was studied by numerical simulation. It can be concluded that sufficient attention needs to be paid to historical relics such as an unfixed Buddha with large heightwidth ratio in the high intensity region because of the existence of hidden dangers of their seismic performance. Furthermore, isolation bearings can be utilized with structures having large heightwidth ratios, such as stone Buddha, in order to produce a significant isolation effect. These ideas,have reference value for similar projects.