The invention provides a gas intake and distribution system based on an electric hydraulic control mode and belongs to the technical field of internal combustion engines. An outlet and an inlet of a high pressure oil pipe are communicated with an oil inlet I and a high pressure oil outlet respectively, an outlet and an inlet of an oil return pipe I are communicated with a valve casing hole and an oil return hole I respectively, an outlet and an inlet of an oil return pipe II are communicated with an inlet of an oil return pipe III and an oil drain duct respectively, an inlet of an engine oil valve oil return pipe II is communicated with an engine oil valve oil return hole II, an inlet of an engine oil valve oil return pipe I is communicated with an engine oil valve oil return hole I, an outlet and an inlet of a low pressure oil pipe are communicated with a low pressure oil inlet and a low pressure oil pipe I respectively, and an inlet of the low pressure oil pipe I and an outlet of the oil return pipe III are arranged in an oil tank; a low pressure oil pipe II is connected with an inlet of an engine oil valve oil intake pipe and a one-way valve II in series, an outlet of the engine oil valve oil intake pipe is communicated with an engine oil valve oil inlet, and a stepping motor, a rotation outer valve cylinder position sensor and a camshaft position sensor are controlled by an electronic control unit. Valve seating impact is small, valve closing moment and lift control is flexible, throttle-valve-free control and a miller cycle can be achieved, reliability is high and manufacturing cost is low.