This　research　involves　a　discrete　amensalism　system　with　the　Beddington–DeAngelis　functional　response　and　Allee　effect　for　the　unaffected　species.　We　begin　by　investigating　the　presence　and　local　stability　of　fixed　points.　Then,　utilizing　the　central　manifold　theorem　and　bifurcation　theory,　we　analyze　a　variety　of　codimension　one　and　codimension　two　bifurcations,　which　include　transcritical,　pitchfork,　fold,　flip,　fold-flip　and　1 : 2　strong　resonance　bifurcations.　These　theoretical　findings　suggest　that　Allee　effect　serves　a　crucial　role　in　stabilizing　the　population　sizes　of　both　species.　In　addition,　Allee　effect　would　make　the　system　spend　more　time　to　achieve　its　stable　steady-state　solution.　They　are　illustrated　via　numerical　simulations.　©　2022,　The　Author(s),　under　exclusive　licence　to　Springer　Nature　Switzerland　AG.