The invention particularly relates to a distributed magnetic ring structure, which comprises a first magnetic ring body, a second magnetic ring body and a cable, wherein the first magnetic ring body and the second magnetic ring body are connected with each other, the cable penetrates through the first magnetic ring body and the second magnetic ring body, an inner magnetic ring sleeve is arranged between the first magnetic ring body and the second magnetic ring body, is located on the cable side, and is electrically connected with a communication board, the communication board comprises a detection module, a data storage module and an RS485 communication module, the detection module, the data storage module and the RS485 communication module are sequentially connected, the inner magnetic ring sleeve is electrically connected to the detection module, and the data storage module is used for recording state parameters output by the detection module and allowing the communication module to read the state parameters. According to the invention, the first magnetic ring body, the second magnetic ring body and the inner magnetic ring sleeve are combined and installed on the cable in a distributed manner, so that the reliability can be improved, and the utilization rate of the existing power transmission infrastructure is improved; and the communication board plays a role in providing real-time line information;.