A reel shaft structure mainly includes: a reel, a truss and a nut, wherein the reel is axially provided with a shaft hole, the truss side is coupled to a fishing rod, and the other side is provided with a shaft, a shaft is disposed in the shaft hole, and the shaft hole is exposed at the end, and a threaded portion is provided, the nut is detachably screwed to the thread portion, and the outer diameter of the shaft is slightly smaller than the shaft hole The diameter allows the reel to pivot relative to the shaft and is easy to disassemble.一種捲線器轉軸結構，主要包括：一線輪、一竿架及一螺帽，該線輪中間軸向設有一軸孔，該竿架一側結合於一釣竿，另一側設有一軸桿，該軸桿穿設於該軸孔內，且末端裸出該軸孔，並設有螺紋部，該螺帽可拆離地螺合於該螺紋部，且該軸桿外徑略小於該軸孔內徑，藉以上述結構讓該線輪可相對該軸桿樞轉，又便於拆解。
