Abstract: The technical specification and design principle of the 3×3 m earthquake simulation vibration table which was accomplished at August 1983 is introduced in this paper. The table motion is controlled directly by acceleration of strong motion, the uniaxal horizontal motion is excited by two hydroelectro-servo controlled actuators, each of them provides 12 ton exciting force. The rated loading capacity is 15 metric tons. Operation frequency range 0.5—30 Hz.