With the continuous development of motor technology,motor fault diagnosis technology is also facing new challenges and opportunities.In traditional motor fault diagnosis,the motor fault diagnosis method based on a single parameter and a single feature often has uncertainty in the diagnosis process,which is difficult to ensure the accuracy of diagnosis.Therefore,this paper mainly studies the application of multi-sensor information fusion tech-nology in motor fault diagnosis,aiming to improve the accuracy and reliability of diagnosis by synthesizing the in-formation of multiple sensors.