A　Nicholson＇s　blowflies　model　with　feedback　control　and　time　delay　is　studied.　By　applying　the　comparison　theorem　of　the　differential　equation　and　fluctuation　lemma　and　constructing　a　suitable　Lyapunov　functional,　sufficient　conditions　which　guarantee　the　permanence,　extinction,　and　existence　of　a　unique　globally　attractive　positive　almost　periodic　solution　of　the　system　are　obtained.　It　is　proved　that　the　feedback　control　variable　and　time　delay　have　no　influence　on　the　permanence　and　extinction　of　the　system.