In order to research the variation of hydraulic data in the working process of the machine tool,a system of hydraulic measurement and data acquisition was designed to realize the pressure machine data realtime online monitoring.The data were processed and analyzed,hydraulic graph was drawn with MATLAB which was convenient to study the hydraulic characteristics of the machine tool.The experimental results show that the system can realize the real-time measurement and transmission of hydraulic value,and MATLAB can be used to realize data processing perfectly.It has certain feasibility and practicality.