In this paper, we propose a decentralized variable gain robust controller which achieves not only robust stability but also satisfactory\ntransient behavior for a class of uncertain large-scale interconnected systems. For the uncertain large-scale interconnected system,\nthe uncertainties and the interactions satisfy the matching condition. The proposed decentralized robust controller consists of a\nfixed feedback gain controller and a variable gain one determined by a parameter adjustment law. In this paper, we show that\nsufficient conditions for the existence of the proposed decentralized variable gain robust controller are given in terms of LMIs.\nFinally, a simple numerical example is included
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