The invention relates to power distribution network transformer manufacturing equipment with a three-phase three-column iron core. The equipment comprises a bottom plate and the iron core mounted on the upper end surface of the bottom plate. The iron core comprises a lower iron yoke, three core columns, an upper iron yoke and an upper clamping part, the three core columns are uniformly mounted on the lower iron yoke, the upper iron yoke is mounted on the three core columns, and the upper clamping part is mounted on the upper yoke and formed by a plurality of iron yoke pieces. Two first linear slide rails are symmetrically mounted on the upper end face of the bottom plate, a lifting mechanism is mounted on each first linear slide rail, a moving mechanism is mounted on the lower back of each lifting mechanism and arranged on the bottom plate, and each lifting mechanism is driven to move back and forth by the corresponding moving mechanism. A lifting plate is mounted between the two lifting mechanisms of the two first linear slide rails, a frame plate is mounted at top ends of the two lifting mechanisms, and two auxiliary driving mechanisms are symmetrically mounted between the frame plate and the lifting plate. The power distribution network transformer manufacturing equipment with the three-phase three-column iron core can realize an automatic rapid transformer manufacturing function.