Abstract: Inertial friction welding demonstrates irreplaceable advantages in the joining of rotor components for aero-engines, driving its rapid development and successful application. This technology exhibits broad application prospects not only in aerospace but also in other industrial sectors. This paper systematically reviews the historical evolution and technological advancements of IFW, with a focus on its application within the aviation industry. A comparative analysis of performance metrics, structural characteristics and research process about main parts of domestic and international IFW equipment tailored for aerospace applications is presented. Finally, the current limitations and future development prospects of IFW equipment in aerospace applications is emphasized.