The invention discloses a fixed insulating rod positioning control device and a control method. The device comprises a control support. A clamping mechanism is arranged on the control support. The clamping mechanism comprises more than two pairs of clamping roller units which are arranged at intervals. Each clamping roller unit comprises a U-shaped support, a U-shaped base, a first elastic piece,a first roller and a second roller, wherein the first roller and the second roller are oppositely arranged, a gap between the first roller and the second roller is suitable for containing an insulating rod, and the first roller and the second roller are each in an arc-shaped column shape with the middle sunken and the two ends protruding. When the insulating rod is placed in the gap formed by theplurality of first rollers and the second rollers, the first elastic pieces drive the U-shaped bases to move in the direction close to the second rollers, so that the first rollers and the second rollers realize surrounding extrusion contact with the insulating rod. The device effectively solves the problem that the insulating rod is inconvenient to control in the prior art.