The utility model discloses an air exhauster seal wire clamping mechanism for processing motor -driven vehicle bulb of road, main content is: including base, extension spring, back shaft, down high frequency porcelain, nut, go up the high frequency porcelain, go up the conducting block, the screw, down conducting block, seal wire, gasket, move chuck and quiet chuck, install on the base back shaft bottom, extension spring one end is fixed on the base, the extension spring other end is fixed on the back shaft and is close to the back shaft bottom surface, it installs on the back shaft top to go up the high frequency porcelain, go up the conducting block and pass through screw and nut fixed mounting on last high frequency porcelain, down the high frequency porcelain is installed on the back shaft and is lain in the high frequency porcelain under, down the conducting block passes through screw and nut fixed mounting under on the high frequency porcelain, quiet chuck fixed mounting is on the back shaft, move that the chuck passes through the screw and the gasket is installed on the back shaft, the seal wire card is moving between chuck and the quiet chuck.