The free-field vibration induced by the 8m×10m/160t shake table was analyzed and measured. The shake table performs well with good frequency response and high reproducibility for strong ground motion signal. The induced free-field acceleration within 10m from the shake table foundation is only 6.6gal while the table runs at its full capacity,and the induced velocity is less than 2mm/s. Therefore,the full load operation of the shake table has no significant impact on human bodies and safety of buildings.