In　this　paper,　we　consider　the　delayed　periodic　logistic　equation　N(t)　=　N(t)[a(t)　-　b(t)N-p(t　-　sigma(t))　-　c(t)N-q(t　-　iota(t))],　which　describes　the　evolution　of　a　single　species.　Sufficient　conditions　which　guarantee　the　permanence　and　the　globally　attractivity　of　the　system　are　obtained.　(c)　2005　Elsevier　Inc.　All　rights　reserved.