Abstract: The H_∞ output feedback control problem for a class of networked control system with both measurement data and control data missing is considered.The random missing of data is modeled as a stochastic variable satis-fying Bernoulli distribution.A sufficient condition for the existence of a dynamic output feedback controller is presented via matrix inequalities,and the designed controller enables the closed-loop system to be exponentially mean-square stable and to guarantee a prescribed H_∞ performance.The sequentially linear programming method(SLPMM) is applied to solve the matrix inequalities.A numerical example is provided to demonstrate the validity of the proposed design approach.