The utility model provides a flexible averruncator of insulating type, include: gu fixed knife rest, its top is provided with fixed blade, gu the fixed knife rest below is provided with first pulley,movable carriage, its front end is fixed with movable blade, movable carriage's rear end is provided with the second pulley, the spring, its both ends are fixed respectively gu fixed knife rest's topand movable carriage's rear end, a plurality of insulator spindles, a plurality of insulator spindles can connect gradually, the connector that is located the insulator spindle of top with the mounting hole is connected, cotton rope, its one end are fixed in movable carriage's rear end, and first pulley and second pulley are walked around in proper order to the cotton rope, spool, its rotatable setting be in the lower part that lies in insulator spindle bottom, the other end of cotton rope is fixed epaxial on line, the worm wheel, its with the coaxial fixed connection of spool, worm, the rotatable support in its both ends be in the lower part that lies in insulator spindle bottom, the worm with worm wheel meshed.