This　paper　investigates　a　model　of　amensalism,　in　which　the　first　species　is　influenced　by　the　combined　effects　of　refuge　and　fear,　while　the　second　species　exhibits　an　additive　Allee　effect.　The　paper　analyzes　the　existence　and　stability　of　the　equilibria　of　the　system　and　derives　the　conditions　for　various　bifurcations.　In　the　global　structure　analysis,　the　stability　at　infinity　is　examined,　and　the　phenomena　of　global　stability　and　bistability　in　the　system　are　analyzed.　Additionally,　a　sensitivity　analysis　is　employed　to　evaluate　the　impact　of　system　parameters　on　populations.　The　study　reveals　that　refuge　has　a　significant　positive　effect　on　the　first　population,　and　refuge＇s　effect　becomes　more　pronounced　as　the　fear　level　increases.　Under　the　strong　Allee　effect,　when　the　initial　density　of　the　second　species　is　low,　the　second　species　may　eventually　become　extinct;　when　the　initial　density　is　high,　if　the　refuge　parameter　is　below　a　certain　threshold,　increasing　the　refuge　parameter　slows　down　the　extinction　of　the　first　species,　whereas,　when　the　refuge　parameter　exceeds　this　threshold,　the　two　species　can　coexist.　Under　the　weak　Allee　effect,　when　the　refuge　parameter　surpasses　a　certain　threshold,　the　two　species　can　achieve　long-term,　stable　coexistence,　and　the　threshold　for　the　weak　Allee　effect　is　higher　than　that　for　the　strong　Allee　effect.