The utility model discloses a secondary line device of flare -outing, including box body, first pivot and second pivot, first pivot sets up on the left side of box body wall and right side wall with the second pivot, all be provided with ring channel and two rings shape groove in first pivot and the second pivot and adjust well to set up to form and supply the secondary line to pass and to secondary line pressure straight through -hole, the preceding lateral wall of box body or go up the lateral wall on be provided with the guide hole, the back lateral wall of box body is provided with lead -out hole, guide hole, through -hole and the setting of lead -out hole coaxial line under perhaps on the lateral wall. During the use, insert the accurate guide hole of secondary wire pair, during the secondary line gets into the through -hole, rotate first pivot and second pivot and carry out the straightening to the secondary line and correct, then from lead -out hole pull out can because the guide hole exists, can prevent that the secondary line from walking partially, ingenious uses double hinge makes the secondary line drawing lightly become the straight while simultaneously, has still protected the wire effectively, convenient to carry prevents effectively that the wire from wearing and tearing, reduction intensity of labour improves work efficiency greatly.