The invention discloses a woodworking saw convenient to process and use. The woodworking saw comprises a woodworking saw fixed end and a cylindrical saw head, wherein the woodworking saw fixed and thecylindrical saw head form a combined structure; a circular groove hole sunken inwards is correspondingly formed in the connection end of the woodworking saw fixed end; a plurality of positioning sliding grooves are distributed in the circular groove hole at equal intervals; a cylindrical positioning pillar is convexly arranged at the connection end of the cylindrical saw head and is correspondingly fixed with the circular groove hole; a plurality of limiting bars in one-to-one correspondence with the positioning sliding grooves are arranged on the cylindrical positioning pillar at intervals.The woodworking saw is simple in structure, convenient to mount and use, convenient to disassemble and excellent in using effect; the replacement cost is reduced.