PROBLEM TO BE SOLVED: To provide a reciprocation tool capable of performing blade replacement in a tool-less manner and a single operation.SOLUTION: A reciprocation tool comprises: a motor 7 a housing 1 a reciprocation conversion part which converts rotation of a drive shaft driven to be rotated by the motor 7 into reciprocation blade connected bodies 51, 52 which reciprocate by the conversion part blades 61, 62 which are connected to the blade connection bodies 51, 52 in a freely detachable manner and a blade holding body 65 which holds the blades 61, 62 in a freely reciprocal manner and is attached to the housing 1 in a freely detachable manner. An operation of an operation lever 80 provided closer to the housing 1 makes it possible to detach/attach a blade assembly 60 having the blades 61, 62 and the blade holding body 65 in a single operation.SELECTED DRAWING: Figure 1
