Abstract: Discusses the output feedback control of a class of nonlinear systems in terms of T-S fuzzy models. A new design method is proposed for the dynamic output feedback controllers to give the sufficient conditions for the existence of the quadratic stability of fuzzy systems, thus converting the control problem into the solutions to LMIs. Analyzing in depth the interaction between each and all fuzzy subsystems, the sufficient conditions become more relaxed. With an inverted pendulum on a cart as an example taken in numerical simulation, the result revealed the quickness and robustness of such nonlinear systems.