Abstract: At present, lifting appliances are widely used in modern industrial production, which has high application frequency, high work intensity, long inspection period, and has certain hidden safety hazards. Therefore, it is necessary to strengthen the inspection and elimination of faults during the operation of lifting appliances Failure problems,thereby ensuring production safety. With the continuous development of testing technology, non-destructive testing is increasingly used in the safety inspection of lifting appliances. Based on this, this article focuses on the necessity of the application of non-destructive testing technology and the classification of testing methods. It makes an in-depth analysis of the application of non-destructive testing technology in the safety inspection of lifting appliances, aiming to improve the applicability and feasibility of the testing technology. And provide reference suggestions for technical staff.