There is provided a plasma sterilization apparatus that permits plasma sterilization providing a uniform sterilization for even sterilization targets having various kinds of three-dimensional shape such as agricultural products, under mild conditions so as to prevent damage and quality deterioration of the targets.A plasma sterilization apparatus includes a voltage-applying unit that applies a voltage to a sterilization target having conductivity a pair of electrodes that apply, in a discharged state, the voltage applied by said voltage-applying unit to the sterilization target via a dielectric and a position changing unit that changes a relative position between the pair of electrodes and the sterilization target.