On　the　basis　of　LMI,　a　design　method　of　variable　gain　robust　H8　controller　for　a　class　of　uncertain　Delta-operator-formulated　time-delay　system　is　presented　in　this　paper.　The　controller　gain　variation　is　assumed　to　be　additive-norm-bounded.　A　sufficient　condition　for　the　existence　of　the　controller　is　formulated　in　LMI　form,　which　is　delay-independent.　A　numerical　example　is　used　to　illustrate　the　effectiveness　of　the　designed　procedures.　Through　the　analysis　of　the　poles　and　the　initial　response　curves　of　the　closed-loop　system,　the　results　show　that　it　is　necessary　to　consider　the　variations　of　the　controller　parameters　when　we　design　a　controller　for　the　uncertain　Delta-operator-formulated　time-delay　system.　Copyright　©　2011　Inderscience　Enterprises　Ltd.