In mining equipment system,mainly load sensitive system is adopted to realize energy saving of hydraulic system.The multi-channel valve in the load sensitive system is the main control element.The pressure compensation valve is generally configured at each multi-channel valve,which can be divided into pre-compensation and post-compensation according to the position of the pressure compensation valve in the system.The characteristics of the existing pre-pressure compensation multi-channel valve were analyzed,and a pre-pressure compensation technology without pressure regulating spring was proposed.Not only the basic function of pre-compensation ensures,but also it has the characteristics of flow anti-saturation.