To solve such the problem that a saw structure in which a moving element enclosed inside a saw handle reciprocates when a saw blade is moved back and forth that ejects air intermittently from the saw blade side has some advantages but has a fatal problem in which the structure is only effective when the saw blade reciprocates in horizontal direction, and the moving element tends to collide with both ends inside the saw handle, causing colliding noise and a shock transmitted to a hand.

The saw has a cylinder-like hollow portion formed inside the saw handle. A piston-like moving element is enclosed in the hollow portion, the tip of an air ejecting port facing the saw blade direction is formed at the end of the saw blade side of the hollow portion, and an air through-hole is formed at the opposite end of the hollow portion or the neighborhood position. The moving element is supported with an elastic body which is fixed to one end of the saw handle side.