The present invention relates to an iron core-type split reactor. The iron core-type split reactor comprises a rack; the rack is provided with at least one reactor unit; the reactor unit comprises at least two coaxially arranged split coils with axes extending vertically; each split coil comprises a wire inlet end used for and provided in a same main circuit and a wire outlet end used for connecting to a corresponding branch circuit respectively; and an inner side of an innermost split coil is provided with an iron core being coaxial with the split coil. The wire inlet ends of the split coils are disposed in the same main circuit, the outlet ends are connected to the corresponding branch circuits respectively to limit a short circuit current, and the inner side of the innermost coil is provided with the iron core, so that the iron core-type split reactor is low in loss, small in flux leakage and small in volume.