In response to the challenges brought by the extension of the Landscape Architecture professional degree to the doctoral level following the adjustment of the national professional degree catalogue in 2022, this study examines the paradigm transformation of knowledge production for Landscape Architecture professional doctoral students. Regarding the mode of knowledge production, by clarifying the fundamental logic differences in knowledge production between the academic doctorates and the professional doctorates, this study argues that professional doctoral knowledge production should shift from the sole pursuit of academic excellence toward the exploration of solutions to real-world problems; drawing on three international paradigms, it further offers insights into China's Landscape Architecture doctoral education. Regarding the attributes of knowledge production, grounded in Basil Bernstein's theory of knowledge structures, this study reveals the essential differences between discipline knowledge and domain knowledge in their organizational forms, and proposes that knowledge production attributes should shift from the single basic principle knowledge of the discipline toward the dual applied knowledge forms of the domain, i.e., applied principle knowledge and applied strategic knowledge. Regarding the pathway of knowledge production, this study analyses the disciplinary knowledge production pathway from a reductionist epistemological orientation and proposes that the domain knowledge production should shift from reductionist decomposition toward integrative construction, by innovatively proposing a staged knowledge production pathway: 1) problem domain identification and knowledge system construction; 2) cross-domain selection and knowledge system integration; and 3) domain expansion and knowledge system reconstruction. This study provides theoretical support and paradigmatic reference for Landscape Architecture professional doctoral education.