Micang Mountains structure belt forms a triangle structural zone. Micang Mountains structure belt plays as an important structural transfer zone in adjusting structural balance between the Longmen Mountains intracontinental composite orogenic belt and the Daba Mountain foreland-thrust belt in the process of piggy-back deformation. The research on structural feature of the Micang Mountains shows that, physical character of basement rock and preexist basement structure are the first-order factor of deformation diversity, and structure shrinkage and the contract ratio are subordination factor.