PROBLEM TO BE SOLVED: To secure high concentricity and positioning accuracy of reel components without performing machining for removing shape defects including a punching taper of a reel body as a resin molded product, and to make a resin reel body meat. We provide spinning reels for fishing that can be reinforced without thickening. SOLUTION: A spinning reel for fishing is formed of a synthetic resin, and a reel body 1 in which an open accommodating recess 1Aa in which a driving member 20 is accommodating is formed, and an opening of the accommodating recess 1Aa are closed. , A through hole 33a through which the drive shaft portion 7 arranged concentrically with the drive member 20 penetrates is provided in the center, and an annular mounting portion 33b attached to the inner peripheral surface of the opening of the accommodating recess 1Aa is provided on the outer peripheral portion. A cover body 33 to be provided, and an annular functional member 60 that is fitted to the inner peripheral surface of the opening of the accommodating recess 1Aa so that the cover body 33 is concentrically positioned with respect to the reel body 1 to reinforce the reel body 1. Has. [Selection diagram] Fig. 2【課題】樹脂成形品としてのリール本体の抜きテーパを含む形状の不具合を除去する機械加工を施すことなく、リール構成部品の高い同心度及び位置決め精度を確保できるとともに、樹脂製のリール本体を肉厚化せずに補強できる魚釣用スピニングリールを提供する。【解決手段】魚釣用スピニングリールは、合成樹脂により成形されるとともに、駆動部材20が内部に収容される開口した収容凹部1Aaが形成されるリール本体1と、収容凹部1Aaの開口を閉塞し、駆動部材20と同心的に配置される駆動軸部7が貫通する貫通穴33aを中心に有するとともに、収容凹部1Aaの開口の内周面に取着される環状の装着部33bを外周部に有するカバー体33と、リール本体1に対してカバー体33が同心的に位置決めされるように収容凹部1Aaの開口の内周面に嵌着されてリール本体1を補強する環状の機能部材60とを有する。【選択図】図2