The utility model discloses a perpendicular wire passing device, which comprises a bracket, the pendulum rod, angle detecting means, the first line wheel of crossing, line wheel and wire wheel are crossed to the second, wherein, be provided with the bearing frame in vertical orientation axle center on the support, the rotatable setting in the upper portion of pendulum rod is on the bearing frame, setting that the line wheel the erect lower part at the pendulum rod is crossed to first line wheel and the second crossed, first line wheel and the second crossed is crossed the setting of axis average level and the wire casing parallel and between them of line wheel and is adjusted well, the first axis of crossing the line wheel is higher than the axis that the line wheel was crossed to the second, the axis of the first wheel of line excessively is parallel with the axis of actinobacillus wheel, the first wheel of line is excessively crossed the line wheel than the second and is kept away from the wire wheel, the setting that the wire wheel was erect is on the support, the axis of wire wheel is back perpendicular on the horizontal plane with the axis projection of first actinobacillus wheel, angle detecting means is used for detecting the rotation angle of pendulum rod. Through designing new perpendicular wire passing device, the tensile influence of unwrapping wire in -process wire rod and inertial influence have been avoided.