Abstract: This paper deals with the problem of obust and non-fragile H∞ control for uncertain tochastic discrete-delay large-scale systems. The ncertainties of the system are assumed to be time-varying norm-bounded. The aim is the design of a robust and non-fragile H∞ decentralized state feedback controller for the systems with additive controller gain variations,which ensures the robust stochastic stability and a prescribed H∞ performance level for the resulting closed-loop system, in spite of the uncertainties and the time delays. Based on the Lyapunov method, a sufficient condition for the existence of such a state feedback controller is obtained in terms of linear matrix inequalities(LMIs).