The invention discloses a rolling type conducting ring assembly applied to a sailboard driving mechanism for transmitting energy sources and electrical signals to stars. The rolling type conducting ring assembly comprises rollers (1), an inner ring (2), an outer ring (3) and a retainer (4); the outer surface of the inner ring (2) and the inner surface of the outer ring (3) are respectively provided with two channels for accommodating the rollers (1); bosses (5) are arranged between the channels; the retainer (4) is fixed on the bosses (5) by uniformly-arranged positioning wheels (6); idler wheels (7) are arranged among the positioning wheels (6); and at the two sides of the upper part and the lower part of the retainer (4), the rollers (1) are sleeved at the idler wheels (7) and are clamped in the channels by means of elastic deformation of the rollers. In the rolling type conducting ring assembly, the retainer is arranged on the bosses of the inner ring and the outer ring, so that relative positions among the rollers are fixed to make the plurality of rollers kept mutual isolation during rolling and avoid abrasion caused by friction; higher assembling precision can be achieved under a condition of lower processing precision of the rollers; and the reliability of a rolling ring is improved.