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Together with the existence of all possible equilibria and their stability, saddle connection and close orbits, we derive some conditions for transcritical bifurcation and saddle-node bifurcation. Furthermore, global dynamics analysis of the model is performed. It is observed that under certain parameter conditions, when the intensity of the fear effect is below a certain threshold value, as the fear effect increases it will only reduce the density of the first species population and will have no influence the extinction or existence of the first species population. However, when the fear effect exceeds this threshold, the increase of the fear effect will accelerate the extinction of the first species population. Finally, numerical simulations are performed to validate theoretical results. <\/jats:p>","DOI":"10.1142\/s0218127424500755","type":"journal-article","created":{"date-parts":[[2024,5,15]],"date-time":"2024-05-15T15:13:17Z","timestamp":1715785997000},"source":"Crossref","is-referenced-by-count":10,"title":["Global Dynamics of Two-Species Amensalism Model with Beddington\u2013DeAngelis Functional Response and Fear Effect"],"prefix":"10.1142","volume":"34","author":[{"given":"Qun","family":"Zhu","sequence":"first","affiliation":[{"name":"School of Mathematics and Statistics, Fuzhou University, No. 2 Xueyuan Road, Fuzhou, Fujian 350108, P. R. China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3617-5550","authenticated-orcid":false,"given":"Fengde","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Mathematics and Statistics, Fuzhou University, No. 2 Xueyuan Road, Fuzhou, Fujian 350108, P. R. 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