A steering device including: an inner column which can be fixed to a vehicle body; an outer column which is outwardly fitted to an outer peripheral face of the inner column to be able to adjust a telescopic position, has a slit which is formed over a length in an axial direction of a telescopic position adjusting range, and axially supports pivotably a steering shaft which is mounted to a steering wheel; a vehicle body attaching bracket which can be attached to a vehicle body to be able to collapse and move to a front side of the vehicle body; a fastening rod which fastens the vehicle body attaching bracket to an inner side in a vehicle width direction by operating an operating lever and clamps the outer column to the vehicle body attaching bracket in order to clamp the outer peripheral face of the inner column and clamp the outer column to the vehicle body attaching bracket by contracting a diameter of an inner peripheral face of the outer column at a desired telescopic position; and a telescopic position adjusting long groove (43, 44) which is formed at the outer column, formed to prolong in a telescopic position adjusting direction, and inserted with the fastening rod; characterized by a through hole which is formed at the inner column at a phase position the same as a phase position of the slit and on a rear side in view of the vehicle body of the fastening rod, and penetrates from the outer peripheral face to an inner peripheral face of the inner column; and a pop rivet which is fixed to the outer peripheral face of the inner column by enlarging a diameter of a front end portion after protruding the front end portion from a side of an outer peripheral face of the outer column to the inner peripheral face of the inner column by passing the slit and the through hole, and can be brought into contact with the fastening rod. an inner column which can be fixed to a vehicle body; an outer column which is outwardly fitted to an outer peripheral face of the inner column to be able to adjust a telescopic position, has a slit which is formed over a length in an axial direction of a telescopic position adjusting range, and axially supports pivotably a steering shaft which is mounted to a steering wheel; a vehicle body attaching bracket which can be attached to a vehicle body to be able to collapse and move to a front side of the vehicle body; a fastening rod which fastens the vehicle body attaching bracket to an inner side in a vehicle width direction by operating an operating lever and clamps the outer column to the vehicle body attaching bracket in order to clamp the outer peripheral face of the inner column and clamp the outer column to the vehicle body attaching bracket by contracting a diameter of an inner peripheral face of the outer column at a desired telescopic position; and a telescopic position adjusting long groove (43, 44) which is formed at the outer column, formed to prolong in a telescopic position adjusting direction, and inserted with the fastening rod; characterized by a through hole which is formed at the inner column at a phase position the same as a phase position of the slit and on a rear side in view of the vehicle body of the fastening rod, and penetrates from the outer peripheral face to an inner peripheral face of the inner column; and a pop rivet which is fixed to the outer peripheral face of the inner column by enlarging a diameter of a front end portion after protruding the front end portion from a side of an outer peripheral face of the outer column to the inner peripheral face of the inner column by passing the slit and the through hole, and can be brought into contact with the fastening rod.