Jaw crusher driving device

Provided is a jaw crusher driving device in which a driving torque can be transmitted reliably to a rotation driving shaft to perform a crushing operation by strongly fixing a hydraulic pressure motor between a body frame of a jaw crusher and a flywheel. The jaw crusher includes a fixed tooth (4), a movable tooth (5), a rotation driving shaft (12) rotatably supported on a body frame, and a pair of flywheels (13, 14) provided in the rotation driving shaft. The driving device includes: a hydraulic pressure motor (20) in which a rotation shaft portion (21) can rotate in relation to a motor body (22) when pressure fluid is supplied; a connector (40) for connecting one flywheel (13) of the pair of flywheels and the rotation shaft portion (21); and a torque arm (30) provided between the body frame and the motor body so as to prevent the motor body from rotating about an axis of the rotation driving shaft.