The invention discloses a distribution transformer intelligent replacing device. The device comprises a rack and a supporting frame. An electric linear moving device is arranged in the middle of the rack, universal wheels are arranged on the bottom of the rack, movable pulleys are arranged on the upper ends of the four corners, four first fixed pulleys are arranged on the tops of the four cornersof the supporting frame, the rack is placed in the supporting frame, steel wire ropes are wound on the positions, corresponding to the movable pulleys and the first fixed pulleys on the four corners,of the rack, one ends of the steel wire ropes are fixedly connected to the top end of the supporting frame, the other ends of the steel wire ropes are connected to an electric winding device, the electric winding device is fixedly connected to one side of the lower portion of the supporting frame, the supporting frame is fixedly connected to a transformer mounting cross arm, and the moving direction of the linear moving device is perpendicular to the transformer mounting cross arm.