Abstract: In view of the development and application requirements of high-power intelligent coal mining machine, the new hydraulic lifting system of coal mining machine is developed. This paper introduces the principle of the project in detail, gives the calculation process and results of the system parameters, and expounds the The structure and function characteristics of the system, completed 3D modeling of the system structure,and the performance advantages of the new system are summarized compared with the conventional hydraulic system, which provides ideas and methods for the design and improvement of the hydraulic system of the shearer in the automatic working face.