In　this　paper,　we　consider　a　Holling　type　II　predator-prey　system　with　prey　refuge,　Allee　effect,　fear　effect　and　time　delay.　The　existence　and　stability　of　the　equilibria　of　the　system　are　investigated.　Under　the　variation　of　the　delay　as　a　parameter,　the　system　experiences　a　Hopf　bifurcation　at　the　positive　equilibrium　when　the　delay　crosses　some　critical　values.　We　also　analyze　the　direction　of　Hopf　bifurcation　and　the　stability　of　bifurcating　periodic　solution　by　the　center　manifold　theorem　and　normal　form　theory.　We　show　that　the　influence　of　fear　effect　and　Allee　effect　is　negative,　while　the　impact　of　the　prey　refuge　is　positive.　In　particular,　the　birth　rate　plays　an　important　role　in　the　stability　of　the　equilibria.　Examples　with　associated　numerical　simulations　are　provided　to　prove　our　main　results.