Abstract:Bee venom is a significant bio-medical resource, and its core component, secretory Group Ⅲphospholipase A2 (sPLA2-Ⅲ), exhibits complex biological functions. It acts as both a primary allergen triggering Type I hypersensitivity reactions and a pleiotropic molecule with broad-spectrum pharmacological activities. Recent studies have revealed that bee venom sPLA2 exerts its effects in vivo through two distinct modes: enzyme activity-dependent and -independent (ligand) pathways. Its core mechanism lies in its potent immunomodulatory and anti-inflammatory effects, achieved by inducing the differentiation of regulatory T cells (Tregs). This has shown therapeutic potential in models of autoimmune diseases, neurodegenerative disorders, and organ damage. Furthermore, it possesses various other pharmacological activities, including anti-neuronal injury, anti-tumor, and anti-infective properties. This review systematically summarizes the molecular characteristics of bee venom sPLA2, its immunomodulation-centered pharmacological actions, and the latest progress in its clinical application research, aiming to provide a theoretical reference for the future translational studies of this molecule.