Qiangtang Basin is a Mesozoic-Neozoic marine residual one, in which marine sediments mainly deposited during Devonian-Jurassic period and continental sediments deposited during Cretaceous-Quaternary period.The widest distributing Upper Triassic and Jurassic rocks are the main targets of exploration. Since Himalayan orogeny, Mesozoic tectonic framework has been reshaped. At least four intensive tectonic activities has happened since Late Cretaceous so that tectonic deformations of strike slip, thrusting and extension coexisted. Thrust faults and wrench compression faults are common and normal faults or wrest tension faults are less. These faults is intensive in developing extent in the east and west ends of the basin and relatively weak in the middle part. Qiangtang Basin has kept relatively stable under the background of whole uplifting Qinghai-Tibet plateau. It is deemed that Qiangtang Basin has affected less by Cenozoic tectonic dynamics and possesses of good potential of oil and gas exploration.