Multi-channel rotating joint

The utility model discloses a multi-channel rotating joint which comprises a shell, an outer pipe, hole check rings, first ball bearings, sealing pieces, first combined sealing rings, second ball bearings, end covers and second combined check rings. The multi-channel rotating joint is characterized in that ball bearing supports, the first ball bearings and the second ball bearings, are arranged at the two ends of the shell and the two ends of the outer pipe, and the sealing pieces and the first combined sealing rings are arranged between the first ball bearings and the second ball bearings in sequence; the sealing pieces are two low-pressure sealing pieces, the number of the first combined sealing ring is seven, the shell and the outer pipe are divided into eight sealing areas, a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel and an eighth channel are designed on the sealing areas of the shell and the outer pipe respectively, the end cov