Abstract: The guaranteed cost control of networked systems with both stochastic network-induced delay and data packet dropout governed by a Markovian chain is investigated.The networked control systems can be modeled as Markovian jump linear systems with two operation modes.Based on the theory of Markovian jump linear systems,the sufficient condition of state feedback guaranteed cost control for networked systems is presented,and the guaranteed cost controller is the solution of a set of linear matrix inequalities.A simulation example is provided to demonstrate the effectiveness of the method.