The invention provides an electrostatic actuation auxiliary feeding type micro-electrolysis machining device. The micro-electrolysis machining device comprises an electrostatic actuation auxiliary feeding system, the electrostatic actuation auxiliary feeding system comprises a planar electrode for machining a workpiece, a machining power supply, an electrostatic field electrode and an auxiliary power supply, wherein the electrostatic field electrode is used for driving the plane electrode, the two ends of the machining power supply are connected with the planar electrode and the workpiece correspondingly, the two ends of the auxiliary power supply are correspondingly connected with the planar electrode and the electrostatic field electrode, an insulating film enabling the auxiliary power supply to not participate in electrolytic machining is arranged on the outer surface of the electrostatic field electrode, and the auxiliary power supply only generates an electrostatic field to drivethe planar electrode to deform. The electrostatic actuation auxiliary feeding type micro-electrolysis machining device has the beneficial effects that the auxiliary power supply generates the electrostatic field to drive the planar electrode to deform, so that electrostatic actuation auxiliary feeding is achieved, micro-feeding is realized by utilizing a planar electrode plate under the actuationof the static electricity, and the problem that the electrostatic actuation deformation amount is too small due to the limitation of the micro-electrolysis machining voltage is well solved.