The utility model discloses an anti-DC current transformer, which is characterized by comprising an anti-saturation iron core, a common iron core, a primary winding, a secondary winding and a compensation winding, the anti-saturation iron core can be an iron-based amorphous iron core or an air-gap-opened iron core; the common iron core can adopt a cold-rolled silicon steel sheet iron core or an ultracrystalline iron core; setting the number of turns of the compensation winding according to the compensation condition required by the ratio difference under the two working conditions of alternating current and half wave; the compensation winding can be wound on the anti-saturation iron core by adopting an enameled copper wire; and after the wound coil is combined with the common iron core, the remaining secondary windings are continuously wound on the two iron cores, or the compensation windings are firstly wound on the common iron core by adopting enameled copper wires, and after the wound coil is combined with the anti-saturation magnetic core, the remaining secondary windings are continuously wound on the two iron cores. The problems that a common current transformer cannot work normally under the condition that a large direct-current component is contained, and the saturation resistance of a magnetic core of an alternating-current transformer is poor are solved.