As shown in the figure for the wire stripping pliers mechanism, when the handle grip pliers, in spring is firstly compressed, making the clamping mechanism to wire. At this moment, the shear mechanism will not move because of the torsion spring 1. When the tightening mechanism clamps the wire completely, the force acting on the torsion spring 1 gradually changes, so that the torsional spring 1 starts to deform, so that the cutting mechanism starts to work. At the same time, the force of the torsion spring 2 is not enough to make the clamping mechanism separate from the shearing mechanism, and the shearing mechanism completely clamps the wire skin and the shearing mechanism is clamped. The 2 torsion spring force increases, when the torsion spring two forces to a certain extent, the torsion spring 2 separate clamping mechanism and the shear deformation mechanism, the insulation wire and the wire is cut apart, so as to achieve the purpose of stripping.