A multi-overlapping robust decentralized connective stabilization method based on dynamic output feedback is proposed for a class of large-scale interconnected systems with the netted topological structure. In this method, the state space of an interconnected system is firstly expanded. The system is divided into a series of pair-wise subsystems in cyclical inverse order in the expanded space. And the robust decentralized dynamic output feedback controllers of each pair-wise subsystem are respectively designed, so that the each pair-wise subsystem is connective stable. Then the designed repeatedly controllers of every subsystem are contracted to the original space. Coordination of the control laws can be achieved. Finally, the proposed method is applied to control design of a four-area interconnected power system with the netted structure. Simulation results show the feasibility and superiority of the proposed method.