Fluidic systems are the important energy consumption components of CNC machine tool, they have potentials to decrease the energy consumption. Taking a large CNC form grinding gear machine tool as example, the structure and function of the fluidic systems were illustrated. Then a measurement and evaluation method for the energy consumption of the fluidic systems was presented. The experiment of form grinding gear was performed to analyze the energy consumption. The results indicate that the energy consumption of the fluidic systems is over 40% of the total energy consumption, the energy consumption of the cooling system and the hydraulic system are about 20% respectively, the energy consumption of the lubrication system is the least. Therefore, the accurate energy demand to control the thermal deformation is needed, and the total energy consumption can be decrease by controlling fluidic systems accurately.