The invention discloses equipment used for electric field device assembly, and relates to the technical field of electric field device assembly. The equipment comprises a spacer bush feeder, a limiting rotary shaft and an operating table, wherein the spacer bush feeder comprises a base; the base is equipped with a plurality of layers of spacer bush feeding plates; a through hole is formed in one end surface of the limiting rotary shaft; three rectangular grooves are formed in one side surface of the operating table; a two-way hydraulic cylinder is fixedly arranged in one rectangular groove; the two end surfaces of the two-way hydraulic cylinder are fixed to rectangular slide blocks; motors are fixedly arranged on the rectangular slide blocks; the through hole is fixedly connected with theoutput shafts of the motors; and the two side surfaces of the operating table and the plurality of layers of spacer bush feeding plates are fixed. Through the effects of the spacer bush feeder, the limiting rotary shaft and the operating table, spacer bushes are conveyed into the limiting rotary shaft, and the limiting rotary shaft rotates and moves to a position among each group of partitions, then, partition shafts are inserted and nuts are screwed up, so that an assembly process is completed. The equipment has the advantages of being high in assembly efficiency, simple to operate, and capable of reducing labor cost and improving product quality and production benefits.