Laser welding of tailored blank is widely used in aerospace industry, automotive industry, shipbuilding etc. due to its high speed and high precision. Quality inspection technology is becoming one of the key technologies for guaranteeing the high quality requirements of laser tailor welded blanks. This paper introduced the major quality inspection technologies applied in laser welding of tailored blank, including structured light vision, electro magnetic acoustic transducers and leakage magnetic. It also respectively expounded their working principles, research and current application situation. Finally, current problems and future development of quality inspection of laser welding of tailored blank were also presented.