To deal with the coupling distraction in the multi-actuators load-sensing hydraulic system,the causes of pressure impact and coupling of the load-sensing hydraulic system were analyzed.It was pointed out that the main reason was the displacement adjustment delay of the variable displacement pump in the flow control valve closing,which directed to the net flow increasing in the pipe between the pump and the flow control valve,causing the pressure impact and the flow fluctuate in other loops.The simulation model was established based on AMESim, the effect of setting the shock prevention circuit at the pump outlet were compared and analyzed to suppress the pressure impact and solve the coupling distraction between the circuits. The results show that by using the anti-shock circuit,the coupling distraction can be reduced obviously.