The invention discloses an automatic switching device for intelligently controlling the parallel running of two 110kV winding transformers. The device comprises a current detection and transformation circuit, a current judgment processing circuit, a transformer service closing circuit and a transformer out-of-service opening circuit, wherein the current detection and transformation circuit is connected in series with the high-voltage side of a first transformer; the signal output end of the current detection and transformation circuit is connected with the signal input end of the current judgment processing circuit; and the signal output end of the current judgment processing circuit is connected with the transformer service closing circuit, the transformer out-of-service opening circuit, a high-voltage side neutral point isolating switch closing circuit and a high-voltage side neutral point isolating switch opening circuit respectively. By the device, labor intensity can be reduced, and the running safety and reliability of the two 110kV winding transformers can be improved.