According to integrated analysis of the basin tectonic-sedimentary evolutionary history from Upper Triassic Xujiahe period to Cretaceous, it’s believed that the Sichuan Basin belongs to intracontinental compressional superimposed basin. The basin formation and evolution are controlled strictly by polychromic, nonsynchronous and multidirectional thrusting-napping processes of Longmen Mountains, Micang Mountains-Daba Mountains and Xuefeng Mountains. And it can be divided into three secondary basin-mountain coupling systems controlled respectively by overthrust on the marginal orogenic belt. And it has formed a peculiar tectonic-sedimentary pattern, which is called “three depressions around one uplift”.