We　propose　and　study　a　mutualism　model　with　feedback　controls.　By　applying　a　new　differential　inequality,　we　show　that　the　conditions　which　ensure　the　permanence　of　the　system　are　the　same　as　that　of　the　model　without　feedback　controls,　which　means　that　the　feedback　control　variables　have　no　influence　on　the　persistent　property　of　the　system.　Our　results　not　only　improve　but　also　complement　some　existing　ones.　(c)　2009　Elsevier　Inc.　All　rights　reserved.