Micangshan Mountains and Longmenshan Mountains, as the boundary of Yangtze plate, are located in the north and west of Sichuan Basin in China. By researching the superposed folds characteristics and restoring the palaeostress field, 3 group structure traces and at least 4 tectonisms are found in the junction area of Longmenshan Mountains and Micangshan Mountains. The Micangshan Mountains deformation has inheritance. In the Late Triassic, the earlier Micangshan Mountains uplift formed by the first phase S-N compressive stress field. In the Late Cretaceous-Paleocene, Micangshan Mountains were rapidly uplifted by S-N compressive stress field.