Mir Jalal Pashayev's literary legacy encompasses a rich body of artistic and scholarly work that has significantly contributed to the development of realism in Azerbaijani literature. His stories and novels explore social and moral issues, delve into the psychological traits of characters, and convey ideas of enlightenment through profound artistic generalizations. One of his most renowned works, "Manifest of a Young Man," offers a comprehensive and effective portrayal of the socio-political environment of its time, the processes of national awakening, and the worldview formation of the younger generation. Additionally, Mir Jalal, as a distinguished literary scholar, conducted essential research on the theoretical and historical aspects of Azerbaijani literature. He achieved notable success, particularly in studying the works of Jalil Mammadguluzadeh and analyzing the traditions of realism with a scholarly approach. His research on literary theory, especially the textbook "Fundamentals of Literary Studies," is regarded as a significant milestone in Azerbaijani philology and has served as a foundational resource in higher education for many years. Mir Jalal's articles on "Classical Heritage and Contemporaries," monographic studies, his doctoral dissertation on "Literary Schools in Azerbaijan," and works such as "Fuzuli's Artistry" and "On the Realism of Jalil Mammadguluzadeh" mark important contributions to the evolution of literary and critical thought. These studies scientifically analyzed the relationships between classical heritage and modern literary processes, addressing issues of continuity and renewal of artistic traditions. Overall, Mir Jalal's literary legacy remains relevant today in preserving national moral values, advancing literary and aesthetic thought, and fostering a new generation of researchers. He is highly esteemed as a key pillar of Azerbaijani literary criticism.