PURPOSE: To obtain spun yarn with hardly any bent fiber by conveying fiber while reducing a flow accompanied with the fiber produced by opening action applied with an opener and sucking action applied with a suction heating member by inflow or air and sucking the fiber.

CONSTITUTION: Plural fibers are opened with an opener and the opened plural fibers are then conveyed to a rotating suction heating member with pneumatic transportation and sucked. The sucked plural fibers are twisted and subsequently taken out in the direction of the axial line of a suction twisting member. In the process, the plural fibers are conveyed and sucked while reducing a flow accompanied with the fibers produced by the above-mentioned opening and sucking actions. Thereby, friction spinning is carried out.