Disclosed is a belt-conveyor carrier roller support for preventing scratch on adhesive tape. The carrier roller support comprises edge carrier rollers on two sides, a middle carrier roller, a cross beam, edge supporting columns, first middle supporting columns and second middle supporting columns. The carrier roller support is formed by the cross beam, the edge supporting columns, the first middle supporting columns and the second middle supporting columns in an installed and welded connection mode. The edge carrier rollers on the two sides and the middle carrier roller are arranged on the edge supporting columns, the first middle supporting columns and the second middle supporting columns through shaft end flat openings, and the lower portion of the carrier roller support is fixed with a middle frame in a bolt-on connection mode. According to the belt-conveyor carrier roller support for preventing the scratch on the adhesive tape, a square steel tube is adopted for the middle cross beam of a carrier roller set and replaces traditional angle steel, therefore, stability of the support is enhanced, the weight of the support is reduced, and cost of the support is reduced; the carrier roller support is of a structure shaped like a Chinese character 'pin', therefore, stress on the three carrier rollers can be balanced, the service life of the middle carrier roller is prolonged, the height of the carrier roller support is reduced, and a worker can observe whether bearings and sealing of the carrier rollers are damaged conveniently.