In order to improve the energy-saving effect of hydraulic excavator,the controlled objects EFI engine and hydraulic pump of the excavator were modeled.At the same time,the energy-saving control strategy based on power matching was optimized.In the strategy,the control process model was established by using PID algorithm and fuzzy control algorithm,and the simulation was carried out after determining the energy consumption evaluation index.The simulation results show that using the new control strategy,the response speed is faster and the robustness is better in stabilizing working point,the overall fuel consumption is reduced by 2.1%and the energy consumption is improved.