The utility model relates to a novel anti energy -saving transformer of varistor. Including transformer tank (6), install transformer core and transformer winding (5) in this transformer tank (6), its characteristics are: install shield plate (3) in transformer tank (6) thereby with separating for transformer room and current limiting reactor room in the transformer tank (6), install in this transformer room transformer core and transformer winding (5), and have current limiting reactor (1) and fast switch (2) in this current limiting reactor indoor location, this fast switch (2) and this current limiting reactor (1) parallel connection to high voltage winding series connection in this fast switch (2) and this current limiting reactor (1) parallelly connected back and aforementioned transformer winding (5). Use this practical novel anti energy -saving transformer of varistor structure can realize the autonomic regulation of impedance, reduces the loss simultaneously, improves economic benefits.