The invention discloses an electric field auxiliary deep drawing device for a stepped part and belongs to sheet forming dies under the action of an electric field. The electric field auxiliary deep drawing device comprises a male die, a blank holder and a female die, the male die is fixed on an upper die base and is subjected to insulation treatment with the upper die base, the blank holder is fixed on the upper die base and is arranged on the outer side of the male die, and the female die is arranged on the upper part of the lower die base and is provided with an inner hole; a through hole isformed in the middle of the male die, an insulating tube is arranged in the through hole, a power-on tube is arranged in the insulating tube and contacts a head electrode at the lower end of the maledie, the head electrode is placed in a U-shaped insulating sleeve to realize insulation with the male die, an ejection device is arranged in the female die, an insulating cylinder is arranged betweenthe ejection device and the female die, a blank holder electrode is arranged on the blank holder, and an insulating ring is arranged between the blank holder electrode and the blank holder. The electric field auxiliary deep drawing device for the stepped part has strong insulation and simple structure, the problems of difficult drawing, fracture, residual stress and the like in the drawing process of the bottom of the stepped part can be solved, and the quality of the stepped part is improved.