Study of structure and lithostratigraphy indicates that tectonic zonation comes into existence in the junction of the Micang Mts. with the Longmen Mts. It may be divided into 4 tectonic zones with gradually weakened deformation southwards which was controlled by the Qinling tectonic belt and reformed by the Longmenshan and Micangshan structures. These 4 zones are:1) permeating crenulation cleavage zone with multi-phase fault activity and metamorphic penetration crenulation cleavages, 2) fold-fault zone with superimposed, overturned, inclined folds and decollement deformation, 3) fold deformation zone with open anticlines and synclines and 4)whole uplift zone with near horizontal and river incision and large box shape anticline.