The utility model discloses a transformer of improved structure, relating to the technical field of transformers. The transformer comprises a framework, and an iron core assembly and a conducting coil which are arranged on the framework. The conducting coil is wound by strip wires. In the transformer of improved structure, the existing conducting coil wound by thread-like wires is replaced by the conducting coil wound by strip wires. As the cross section area of the strip wires is much bigger than that of the thread-like wires, the resistance of the conducting coil is largely reduced, heat produced by the conducting coil is largely reduced, heat losses are reduced, and transformer efficiency is improved. Besides, the cross section area of the strip wires is much bigger than that of the thread-like wires, the rated load capable of being bore by the transformer is largely improved, and transformer damage or failure risks caused by too large transformer load are largely reduced.