The invention relates to the technical field of rotary electrical connection, and provides a current collector slip ring, which comprises a housing, an electric housing, an electric shaft and a cableconnecting the electric housing and the electric shaft. The electric housing comprises a pair of arc-shaped electric housings, and the arc-shaped electric housing comprises an arc-shaped housing and aplurality of electric terminals inserted in the arc-shaped housing. The electrical shaft comprises a plurality of conductive rings; A cable includes a plurality of first cores, the electrical shaft comprises a ring shaft and a length of both ends of the ring shaft, Between adjacent conductive ring on that ring shaft, an insulating re larger than the outer diameter of the conductive ring is for, so that a ring groove with a conductive ring as a bottom is formed between adjacent insulating rings, When the electric shaft is fastened in a pair of arc-shaped electric shells, a plurality of electric terminals respectively fall into corresponding ring grooves and are in contact with the conductive rings, thereby solving the technical problem of rotary electrical connection by the structure, achieving the effects of simplifying the manufacture, reducing the cost and improving the yield of the product.