Abstract: An the process of social and economic development, construction machinery plays an important role. On the one hand, it can improve the production level in various fields, strengthen the performance and function of industrial products, on the other hand, it can greatly meet people's needs and create good economic and social benefits.In order to further promote the rapid development of construction machinery, the application of mechatronics and the transformation of the original production mode of construction machinery will help to improve the production capacity of construction machinery. This paper discusses the application of Mechatronics in construction machinery,and provides reference for the development of mechatronics.