Electric field sensor calibration system

The invention provides an electric field sensor calibration system. The electric field sensor calibration system comprises an electric field generation assembly and an electric field calibration assembly, wherein the electric field generation assembly comprises an upper polar plate, a lower polar plate, a zero potential polar plate, a supporting column and a box. Through arc-shaped design of the upper polar plate and the lower polar plate, and by effectively utilizing the influences of a fringe effect to the internal electric field distribution, the generated electric field can be more evenlydistributed in a central testing area; and a plurality of sensors can be placed on the zero potential polar plate to be tested simultaneously. The electric field sensor calibration system has the beneficial effects that through design of the arc-shaped polar plates and by effectively utilizing the influences of the fringe effect on the internal electric field distribution, the generated electric field is more evenly distr