The utility model relates to the field of 66kV grounding transformers with power distribution output for a station, in particular to a 66kV grounding transformer with power distribution output for the station. The 66kv grounding transformer comprises a main winding, an iron core and a neutral point, and is characterized in that a single device body structure of the three-phase three-column type iron core is adopted, a secondary winding serves for power distribution output of an auxiliary power source in the station and a power source used for the station, a zigzag connecting wire is adopted on the main winding side, a star-shaped connecting wire is adopted on the secondary winding side, a zero phase is led out of both the main winding and the secondary winding, the nominal voltage of the secondary winding which is arranged close to the iron core is 0.4kV, and the nominal voltage of the main winding which is arranged on the outer layer of the secondary winding is 66kV. Compared with the prior art, the 66kV grounding transformer has the advantages of being applicable to a three-phase power system with the insulative neutral point, providing power sources for electric equipment in the transformer substation through the secondary winding, saving a large amount of material cost, and being small in occupied area, low in electric energy loss and small in equipment investment.