A scroll compressor wherein in order to control noise and vibration produced due to a variation in the self-rotation torque of a movable scroll (26) and to prevent such control from imposing limitations on the design of vortex shapes, the direction in which an Oldham's coupling (39) slides is specified so that the direction of action of the inertial force of the Oldham's coupling is substantially opposite to the direction of action of the reaction due to gas compression, and the variation width of the total torque (T) consisting of a self-rotation first torque (T1) acting on the movable scroll (26) due to the reaction of gas compression and a self-rotation second torque (T2)due to the slide movement of the Oldham's coupling (39) is smaller than the variation width of the self-rotation first torque (T1).
