The invention provides an oil sprinkling core and rotating shuttle shaft matching structure, a rotating shuttle oil supply structure provided with the matching structure and a sewing machine provided with the oil supply structure. The matching structure comprises a rotating shuttle shaft and an oil sprinkling core sheathed on the rotating shuttle shaft; the oil sprinkling core is in clearance fit with the rotating shuttle shaft; an axial threaded hole is formed in the front end of the rotating shuttle shaft; a through hole communicated with the threaded hole is formed in the radial side; a fastening screw is mounted in the threaded hole; an extruding piece is placed in the through hole and is extruded by the fastening screw so as to form an interference fit with the oil sprinkling core. With the adoption of the matching structure, the disassembly precision of a rotating shuttle and the convenience of oil line replacement are improved.