The invention relates to an intelligent ring main unit, which comprises a plurality of distributed units, wherein each distributed unit comprises an instrument room, and an integrated-chip-based distribution terminal module DTU is arranged in the instrument room; the integrated-chip-based distribution terminal modules DTU of the distributed units are in communication connection with one another, and the integrated-chip-based distribution terminal modules DTU of at least two distributed units are connected to a power distribution main station; the integrated-chip-based distribution terminal modules DTU connected to the power distribution main station serve as convergence DTU, the integrated-chip-based distribution terminal modules DTU of other distributed units apart from the convergence DTU transmit their own information to the corresponding convergence DTU, and the convergence DTU transmit the received information and their own information to the power distribution main station. According to the intelligent ring main unit, each distributed unit is equipped with the integrated-chip-based distribution terminal module DTU, the integrated-chip-based distribution terminal modules DTU of the distributed units are in communication connection with one another, the reliability of the ring main unit is improved, the ring main unit has the measurement, monitoring and protection functions, and power distribution automation of the ring main unit is completely realized.