A tilt device for a steering gear is disclosed, in the steering gear comprising a tilt adjusting mechanism in which a tilt lock release is established only when an oscillation-free end of an operating arm portion of a tilt operating lever is positioned toward a steering wheel side, even when the tilt operating lever is oscillated to the steering wheel side, the tilt operating lever can be prevented from returning under its own weight, thereby preventing it from being difficult to operate. The invention also comprises an oscillation latch portion (53) formed on the circumference of an oscillation center portion (5P) of an oscillation base portion (51) of the tilt operating lever (5) and moving reciprocally in the circumferential direction, a hook portion (24) formed in the movable bracket (2), and a spring (6) that hangs between the oscillation latch portion (53) and the hook portion (24) to elastically apply forces in the direction of contraction. The centerline of the spring (6) is able to pass through the oscillation center portion (5P) of the tilt operating lever (5) appropriately.