Reviewing the achievements in the Longmen Mountain thrust belt, especially the differential structural deformation, the geometrical styles of deformation and structural evolution. Typically differential structural deformation in the Longmen Mountain includes the zonation from west to east, segmentation from north to south, delamination from down to up, and lots of styles of deformation developed in the Longmen Mountain thrust belt, such as fault related folds, triangle belt, klippes, duplex and so on. meanwhile, it has experienced multiphase of structural evolution with the result of superimposed character. At last, it is put forward that the geological model based on the surface, the seismic sections elaborated explained, the reasonable geological model and several quantizing methods all may impulse the study of the complicated structural styles, the characters of its evolution and the hydrocarbon exploration activity in the studied area.