The utility model belongs to the field of bolt machining. The clamping and steering device for bolt machining comprises a base, proposed now is the following scheme, the device comprises a base internally provided with a mounting cavity, and a cross rod, a driving motor is mounted in the base; an output shaft of the driving motor is connected with a fixed cylinder rotationally connected to the topend of the base and provided with two sealed ends; a screw rod is rotationally connected into the fixed cylinder; a rotating handle is installed at the top end of the lead screw, a sliding block in sliding connection with the interior of the fixed cylinder is in screw transmission fit with the lead screw, a movable hole is formed in the side wall of the fixed cylinder in the length direction, oneend of the cross rod penetrates through the movable hole to be fixed to the sliding block, a through hole is formed in the cross rod, and a horizontally-arranged rodless air cylinder is installed inthe through hole. According to the device, the bolt subjected to heat treatment is adsorbed through electromagnetism, the surface of the bolt is not damaged, multiple bolts can be adsorbed at a time,and meanwhile the bolt can be prevented from falling off in the rotating motion process.