A spinning machine comprising: a plurality of units of spinning each including a drafting device for drawing out a roving and a roving-supply stop device for stopping supply of the roving to the drafting device, wherein the roving-supply stop devices of the units of spinning are arranged in a longitudinal direction of a base of the spinning machine and each include a roving-supply stop member (30, 32) that is shifted between a first position for allowing the supply of the roving to the drafting device and a second position for stopping the supply of the roving to the drafting device, an urging member for urging the roving-supply stop member (30, 32) to the second position, and a holding member for holding the roving-supply stop member (30, 32) in the first position against an urging force of the urging member, characterized in that the spinning machine further comprises a return mechanism (41, 71) that includes a moving member (42, 72), a drive part (43, 73a, 73b, 74), and a return member (44, 44a-44e, 75), characterized in that the moving member (42, 72) extends in the base longitudinal direction and is disposed movably in the base longitudinal direction, the drive part (43, 73a, 73b, 74) moves the moving member (42, 72) in the base longitudinal direction, and the return member (44, 44a-44e, 75) is disposed on the moving member (42, 72) and moved together with the moving member (42, 72) when the drive part (43, 73a, 73b, 74) moves the moving member (42, 72) in the base longitudinal direction, and the return mechanism (41, 71) engages the return member (44, 44a-44e, 75) with two or more of the roving-supply stop members (30, 32) in the second position when the drive part (43, 73a, 73b, 74) moves the moving member (42, 72) together with the return member (44, 44a-44e, 75) in the base longitudinal direction, and returns the two or more of the roving-supply stop members (30, 32) from the second position to the first position against the urging force of the urging member through the engagement of the return member (44, 44a-44e, 75) with the two or more of the roving-supply stop members (30, 32) in the second position. a plurality of units of spinning each including a drafting device for drawing out a roving and a roving-supply stop device for stopping supply of the roving to the drafting device, wherein the roving-supply stop devices of the units of spinning are arranged in a longitudinal direction of a base of the spinning machine and each include a roving-supply stop member (30, 32) that is shifted between a first position for allowing the supply of the roving to the drafting device and a second position for stopping the supply of the roving to the drafting device, an urging member for urging the roving-supply stop member (30, 32) to the second position, and a holding member for holding the roving-supply stop member (30, 32) in the first position against an urging force of the urging member, characterized in that the spinning machine further comprises a return mechanism (41, 71) that includes a moving member (42, 72), a drive part (43, 73a, 73b, 74), and a return member (44, 44a-44e, 75), characterized in that the moving member (42, 72) extends in the base longitudinal direction and is disposed movably in the base longitudinal direction, the drive part (43, 73a, 73b, 74) moves the moving member (42, 72) in the base longitudinal direction, and the return member (44, 44a-44e, 75) is disposed on the moving member (42, 72) and moved together with the moving member (42, 72) when the drive part (43, 73a, 73b, 74) moves the moving member (42, 72) in the base longitudinal direction, and the return mechanism (41, 71) engages the return member (44, 44a-44e, 75) with two or more of the roving-supply stop members (30, 32) in the second position when the drive part (43, 73a, 73b, 74) moves the moving member (42, 72) together with the return member (44, 44a-44e, 75) in the base longitudinal direction, and returns the two or more of the roving-supply stop members (30, 32) from the second position to the first position against the urging force of the urging member through the engagement of the return member (44, 44a-44e, 75) with the two or more of the roving-supply stop members (30, 32) in the second position.