The invention discloses a wide-range measurement control circuit for a Rogowski-coil-based current transformer. The wide-range measurement control circuit comprises a resistance adaptation circuit connected to the signal output end of a Rogowski coil of a current transformer to meet the measurement requirements of primary current at different positions, wherein the resistance adaptation circuit is controlled by a multi-position switch control circuit; the signal output end of the resistance adaptation circuit is connected with an acquisition unit of the current transformer. According to the wide-range measurement control circuit, a secondary output analogue small signal, input into the acquisition unit, of the high-accuracy Rogowski coil under rated primary current of different positions is a fixed value, and when the primary current of different positions is measured, an output value of the acquisition unit can be controlled within a required range only by regulating a corresponding multi-position control switch and matching a corresponding adaptation circuit, so that rated primary current of several amperes and even tens of thousands of amperes can be measured by virtue of a single high-accuracy Rogowski coil.