Piloti structure is a building designed to open the ground floor as a basic principle of modern architecture. However, it is considered urgent to prepare seismic retrofit plans for the irregular torsion problem of the Piloti building through the recent Pohang earthquake. Therefore, this study aims to provide the basic data for the selection of the Piloti building seismic retrofitting method by comparing the dynamic characteristics of each method through the small shaking table experiment using the seismic retrofitting method of the pilotty building.