The utility model provides a crossing wire passing device. The device comprises a ladder, a sleeve, a cross rod and a pulley, the bamboo ladder is used for lifting the crossing line to a preset height; the number of the sleeves is two, and the two sleeves are parallel to each other. The ladder comprises a plurality of cross beams and two vertical rods, the cross beams are arranged between the vertical rods, one end of each cross beam is vertically connected with one vertical rod, and the other end of each cross beam is vertically connected with the other vertical rod; the two sleeves are respectively sleeved at the upper ends of the two vertical rods; one end of the cross rod is connected with the side wall of one sleeve, and the other end of the cross rod is connected with the side wall of the other sleeve; and the pulley is suspended on the cross rod and used for guiding and passing of a crossing line. The device disclosed by the utility model is simple and convenient to build and wide in application range; the applicability is high; the device is safe and reliable, does not need to contact a running low-voltage line, reduces the personal electric shock risk, does not need personnel climbing operation, and reduces the falling risk.