The utility model discloses a device that the passageway switched on among the guarantee capillary array cutting process, include: a gaseous air supply for inciting somebody to action many root hairs tubule concentrate mechanism tied in a bundle that the beam forming formed the capillary array with be used for providing continuously let in the capillary in, capillary array and air supply sealing connection. The device can ensure the conduction of passageway among the capillary array end cutting process tied in a bundle effectively, but this technique wide application in many encapsulation cuttings tied in a bundle of the breakable material of this kind of fragility of similar quartz capillary.