Abstract: To solve the energy consumption problem existing in the electronic hydraulic braking system, a mathematical model was established for energy consumption analysis, and the effect of system parameters and structure parameters on energy consumption characteristics of electronic hydraulic braking system were analyzed based on this mathematical model. Analysis results show that, reducing the maximum system working pressure and diameter of brake wheel cylinder piston is beneficial to decrease the power consumption of electronic hydraulic brake system, but the change of the minimum system working pressure and the effective discharge of the accumulator have a little influence on it. Increasing the charging pressure of accumulator or reducing the effective discharge of accumulator and the diameter of brake wheel cylinder piston will make the accumulator smaller.