Abstract:According to multidisciplinary analysis of the basin texture and tectonic-sedimentary evolutionary history from Upper Triassic Xujiahe Formation to Cretaceous in Sichuan basin, it can ascertain that the basin belongs to intracontinental convergence basin which develops on the basis of large peripheral foreland basin, and it has the features of analogous forland basin. Formation and evolution of the basin are controlled by polychronic and nonsynchronous thrusting-napping process of Longmenshan, Micangshan-Dabashan and Xuefengshan. In term of thrusting, napping, deroofing, subsidence of foredeep geotectogene, lateral growth, and material circular relationship of packing action in each orogenic belt, the evolution of the basin is divided into three secondary systerms, which are western Sichuan, northeast Sichuan, and southeast Sichuan. It formed a peculiar tectonic-sedimentary pattern, which is called “three depressions around one uplift”. Corresponding to the thrusting-napping alternative activity in each orogenic belt, the tectonic evolution can be divided into three evolutionary phases, which are early peripheral foreland basin, middle Analogous forland basin, and late atrophy phase. According to the main factors of coupling process between basin and mountain, the middle Analogous forland basin can be subdivided into Longmenshan Analogous forland basin(T3x), Micangshan-Dabashan Analogous forland basin(J1→J2), and Longmengshan-Xuefengshan composite Analogous forland basin(J3). The late atrophy phase can be subdivided into atrophy (K1) and consumption phase(K2→K3). The sedimentary response to coupling process between basin and mountain in each evolutionary phase is of particular similiarities and differences. The differences are that different thrusting-napping stress positions in each orogenic belt have different subsidence-depocencer positions, and the evolutionary features which are moving back and forth among western Sichuan depression, northeast Sichuan depression, and southeast Sichuan depression. The similiarities express that stratigraphic distribution of coupling process between basin and mountain in different phases has the features of onlap and wedge shape which is become thinner from the front geotectogene, forebulge ramp region to foreland uplift zone. It also has similar combinations of sedimentary facies, distribution rules of facies belts, and petroleum geologic characteristics.