Abstract: An unfalsified controller was designed for MIMO (multi-input multi-output) system and the conditions for BIBO(bounded-input bounded-output) stabilization of closed-loop systems where given via theoretical proof. The proposed method is data-driven and doesn't relay on system model. The controller designed is so simple that it is highly adaptable to application on line. The feasibility and effectiveness of this algorithm are confirmed by a simulation applying it to an inverted swinging pendulum system.