Driving machine

Provided is a driving machine that performs driving only when a push lever and then a trigger lever are in an ON position. A driving machine that has a sleeve valve that drives a driver blade. A trigger valve (51) controls the supply and release of compressed air to and from the sleeve valve. The trigger valve (51) has: a valve piston (61) that can move between an air-supply position wherein an opening part (54) and a connection port (56) are connected and an exhaust outlet (55) is blocked and an exhaust position wherein the opening part (54) is blocked and the exhaust outlet (55) and the connection port (56) are connected; and a plunger (67) that can move between a connected position wherein compressed air that is inside an accumulator is supplied to a pressure chamber (56) and a cut-off position wherein the connection between the accumulator and the pressure chamber (66) is cut off and air inside the pressure chamber (66) is discharged. When a trigger (41) and a push lever (44) are in a strike interruption