The invention discloses a distribution transformer, which belongs to the technical field of transformers. A distribution transformer includes transformer equipment and cooling equipment, and further includes: loop tubes, which are arranged on the inside and outside of the transformer device, and the output ends and the input ends of the loop tubes are both connected to the cooling device; a stirring component is connected to In the transformer equipment; the present invention arranges a loop tube inside and outside the transformer device, uses a cooling device to discharge cooling liquid into the loop tube, absorbs the heat inside the transformer device, and conducts the heat inside the transformer device to the outside of the transformer device, At the same time, water is sprayed to the outer loop tube through the piston cylinder to dissipate heat again, thereby accelerating the cooling of the transformer oil. At the same time, the transformer oil is stirred with the stirring fan blade, so that the transformer oil is fully contacted with the internal loop tube, and the transformer is fully cooled. , improve the cooling effect and efficiency.