Based on conventional observation data, intensive surface automatic weather station observations, Doppler radar data from Linyi, wind profiler radar data from Pizhou, and ERA5 reanalysis data, this study analyzes the radar characteristics and environmental conditions of an EF2-rated supercell tornado that occurred in the southern region of Linyi City, Shandong Province, on April 15, 2023. Special attention is paid to the interaction between the bow echo and the supercell, revealing its significant impact on tornado formation. The research finds that this tornado event occurred against the backdrop of a northeastern cold vortex. The parent storm of the tornado exhibited a classic low-level hook echo structure, accompanied by a deep mesocyclone and tornado vortex signature (TVS) features. A moderately intense mesocyclone formed and developed near 3 km altitude, and as its radius rapidly contracted and its base height rapidly descended below 1 km, the tornado formed. Prior to tornado formation, the environmental conditions were characterized by weak low-level vertical wind shear and strong stratiform instability. However, as the southwest low-level jet transported air with high instability energy over the cold pool, it overlapped with the northwest airflow near 700 hPa at higher altitudes, creating a strong vertical wind shear environment in the overlap area. As the low-level warm-moist jet ascended along the cold pool, transporting instability energy to higher altitudes, this instability energy, when combined with strong vertical wind shear in the convection trigger region and enhanced updrafts, initiated convection.Once convection was initiated, the abundant instability energy transport facilitated rapid intensification of the supercell, ultimately leading to tornado formation.This study contributes to a deeper understanding of tornadogenesis mechanisms under specific environmental and radar signatures.