In　a　paper　by　Chang　[D.Y.　Chang,　Applications　of　the　extent　analysis　method　on　fuzzy　AHP,　European　Journal　of　Operational　Research　95　(1996)　649-655],　an　extent　analysis　method　on　fuzzy　AHP　was　proposed　to　obtain　a　crisp　priority　vector　from　a　triangular　fuzzy　comparison　matrix.　It　is　found　that　the　extent　analysis　method　cannot　estimate　the　true　weights　from　a　fuzzy　comparison　matrix　and　has　led　to　quite　a　number　of　misapplications　in　the　literature.　In　this　paper,　we　show　by　examples　that　the　priority　vectors　determined　by　the　extent　analysis　method　do　not　represent　the　relative　importance　of　decision　criteria　or　alternatives　and　that　the　misapplication　of　the　extent　analysis　method　to　fuzzy　AHP　problems　may　lead　to　a　wrong　decision　to　be　made　and　some　useful　decision　information　such　as　decision　criteria　and　fuzzy　comparison　matrices　not　to　be　considered.　We　show　these　problems　to　avoid　any　possible　misapplications　in　the　future.　©　2007　Elsevier　B.V.　All　rights　reserved.