The utility model belongs to the technical field of construction tool, in particular to insulated wire wire stripper. Insulated wire wire stripper includes base and blade holder. The base includes first bottom plate and second bottom plate. Parallel and the dead in line of first recess and third recess, the parallel and dead in line of second recess and fourth recess. An adjustment mechanism drives first bottom plate and moves, and the 2nd adjustment mechanism drives the second bottom plate and moves. The 5th recess and the 6th recess have been seted up on the blade holder. Be provided with straight sword in the 5th recess, be provided with oblique sword in the 6th recess. The 3rd adjustment mechanism can drive straight sword simultaneously and reciprocate with oblique sword. The one end of base is articulated mutually with the one end of blade holder. Insulated wire wire stripper in this scheme can improve the speed that strips the insulating layer, and convenient operation, swift avoids fish tail wire inner core or fish tail personnel arm, labour saving and time saving. And this scheme can adapt to the insulated wire of different diameters, adjusts in a flexible way, raises the efficiency.