The high and steep structures in east Sichuan, located in east Sichuan Basin, are composed of ejective folds. The structural deformation has experienced the evolution from trough like folds to two anticlines with one fault, and finally formed ejective folds. Based on the studies of pre existing structures of two anticlines with one fault, according to the viewpoint of inheritance and development, comprehensively using the new structural theories, such as extensional structures, inversion structure...