In　this　Letter,　we　propose　a　scheme　to　generate　atomic　cluster　states　in　optical　cavity　QED.　In　the　scheme,　the　atomic　spontaneous　emission　is　suppressed,　and　the　fidelity　is　not　affected　by　the　imperfection　of　detection　efficiency.　We　further　research　the　successful　probability　and　the　fidelity　via　numerical　simulation　by　considering　the　influence　of　the　possible　noise.　(C)　2007　Elsevier　B.V.　All　rights　reserved.