The utility model discloses an intelligent distribution room recognition instrument on the basis of a Rogowski coil. The intelligent distribution room recognition instrument on the basis of the Rogowski coil comprises the flexible Rogowski coil connected to the branch circuits three phases A, B and C on a low-voltage side in a transformer distribution room. The flexible Rogowski coil is connected to a test host computer. The branch circuits of the three phases A, B and C on the low-voltage side in the transformer distribution room are further connected with a handheld extension set electrically connected with the test host computer. The handheld extension set is connected with a tested phase of a client side in a testing mode. The test host computer is connected with all phase wires and null wires on the low-voltage side. Low-frequency carrier signals are modulated nearby the zero crossing points of alternating voltages of the three phases A, B and C. The voltage, the active power, the reactive power and the power factor value on the low-voltage side can be further tested. The handheld extension set carries out receiving on an alternating current power supply on a low-voltage electricity user side, and therefore the information and the phase wires of the distribution room are determined according to the intrinsic characteristics of the 120-degree phase difference between the phases. The intelligent distribution room recognition instrument on the basis of the Rogowski coil is used for checkpoint distribution of distribution room of a power supply department and used for determining the distribution room where a carrier terminal is located, testing of phases, balancing of power supply loads of all phases and the like when being applied to low-voltage carrier automatic data logging.