The invention relates to a forming method for cylindrical material. A forming device comprises a center shaft, a wire guide plate and two wire twisting plates, wherein the wire guide plate and the wire twisting plates are arranged on the center shaft; a plurality of clamping grooves are formed in the circumferential edge of each wire twisting plate; the wire guide plate is provided with a plurality of wire guide holes; each wire twisting plate is provided with one pair of plate-clamping pliers in a matched mode, each pair of plate-clamping pliers is provided with two pliers bodies with half-round pliers heads, two pliers heads can form a round ring matched with the wire twisting plates in shape, and a plurality of protruding parts are arranged on the inner side wall of each round ring and correspond to the clamping grooves in the wire twisting plates in position in a one-to-one mode. The forming method comprises the steps of 1, enabling the free ends of a plurality of steel wires to sequentially penetrate through the clamping grooves in the wire twisting plates and the wire guide holes in the wire guide plate and hooping the wire twisting plates on the inner side through the plate-clamping pliers; 2, rotating the wire twisting plates through the plate-clamping pliers and enabling the steel wires to be twisted accordingly for forming a cylindrical structure; 3, covering the outer surface of the cylindrical structure with a film and enabling the film to adhere to a steel wire cylinder through extruding or heating; 4, relatively rotating the two wire twisting plates attached to each other and cutting off the steel wires.