The utility model discloses a centering device for a suspender embedding hole of a tied-arch bridge. The centering device comprises a base supported on the upper end face of a beam, a mounting platform mounted on the upper end of the base, a laser generator parallel to the lower end face of the base and arranged on the mounting platform, a positioning disc in the middle of which a laser passing hole is formed, and a laser target in the middle of which a cross-shaped target is arranged. The centering device for the suspender embedding hole of the tied-arch bridge is simple in structure, convenient to operate, capable of improving the centering accuracy of the suspender embedding hole, advantageous for improving the construction efficiency of the tied-arch bridge, and also capable of guaranteeing the bridge construction and operation safety.