1, anti-crush type tracheal tube extension tube, comprising an extension tube (1) with a breathing circuit connector (3) and a tracheal tube connector (2) inserted at each end, characterized in that: a spiral set of metal wires (4) is embedded in the wall of said extension tube (1). 2, according to claim 1, the anti-bending type tracheal catheter extension tube, characterized in that: in said extension tube (1) and breathing circuit connector (3), extension tube (1) and tracheal catheter connector (2) of the plug are coated with adhesive, said breathing circuit connector (3) and tracheal catheter connector (2) through the adhesive fastening bonded to the ends of the extension tube (1) respectively. 3, according to claim 2, the anti-bending type tracheal tube extension tube, characterized in that: in said extension tube (1) and breathing circuit connector (3), extension tube (1) and tracheal tube connector (2) plugging contact surface are coated with liquid paraffin. 4, according to claim 3, the anti-folding type tracheal tube extension tube, characterized in that: said tracheal tube connector (2) is a double-lumen bronchial tube connector. 5, according to any one of claims 1 to 4 anti-bending type tracheal tube extension tube, characterized in that: said metal wire (4) is preferably steel wire. 6, according to claim 5, the anti-bending type tracheal tube extension tube, characterized in that: said adhesive is two liquid mixed hardening adhesive.