The utility model discloses a cable passes through packer, including the top connection, the center tube, the rubberizing cylinder base, the packing element, lower packing element seat, the slot cover, the anticollision ring, the lower clutch, the stop pin nail one, and the stop pin nail two, and its characterized in that center tube be double-barrelled structure, is equipped with the straight hole passageway of cable in center tube one side along the axis of ordinates direction of center tube, and center tube top-down is equipped with top connection, rubberizing cylinder base, packing element, lower packing element seat, lower clutch in proper order, the slot cover is arranged in the lower clutch inner chamber to hug closely at the center tube lower extreme, the top connection is passed through stop pin nail no. 2 with the rubberizing cylinder base and is connected, the anticollision ring is located packing element seat lower extreme down to it is fixed through stop pin nail no. 1 and lower clutch. The utility model discloses simple structure, the operation of being convenient for when reliable of assurance separates, can realize again that the cable passes through, has realized well head control system and surveyed accent instrument signal transmission in the pit that the real-time accent of surveying has satisfied the modern oil field exploitation demand of becoming more meticulous.