abstract: rolling-cut bilateral shear is a kind of shearing structure, which works on both sides of steel plates continuously advancing with rated width. In order to realize pure rolling-cut shearing, through analysis of shearing-cut mechanism in space of a new model of rolling-cut bilateral shear and kinematics, by simplifying rolling-cut bilateral shear which comes out the simplified model based on linkage structure and applying plurality & matrix to the establishment of kinemics model of linkage structure, programming relevant functional simulation module, adopting SIMLINK for simulating the kinematics, all these are provided as a foundation of the design, analysis of control principal, and using in practice of shearing-cut mechanism.