PROBLEM TO BE SOLVED: To provide a fishing spinning reel configured to change specifications at a low cost.SOLUTION: A fishing spinning reel comprises: a reel body 1; a lid member 30 for closing a side-part opening 13 provided at a side part of the reel body 1; a handle shaft 5 rotatably supported by the reel body 1 and the lid member 30; d drive gear 6 rotatingly driven by the handle shaft 5; a spool shaft 8 equipped with a spool 3 around which a fishline is wound, at a front end side; a spool reciprocation device 70 supporting the rear end side of the spool shaft 8 and, with the drive of the drive gear 6, reciprocatingly driving the spool shaft 8 in the longitudinal direction; and a support member 21 that is formed as a different body from the reel body 1, and supports at least a part of a component constituting the spool reciprocation device 70. The support member 21 is configured to be attachable to an attachment part 20 provided at the inside part or the outside part of the reel body 1.SELECTED DRAWING: Figure 4