Buried depth change, thermal evolution and hydrocarbon generation history of the Jurassic marine strata in typical areas of the Qiangtang basin are analyzed synthetically according to field geological survey, seismic reflection profile, drilling records, vitrinite reflectance and paleo- temperature. Buried depth of the Lower Jurassic marine mudstone and shale increased from the Middle to Late Jurassic in the Wananhu area, Bandaohu anticline, Amuco area and Bilogco paleo- oil reservoir. Vitrinite reflectance R o of the Lower Jurassic mud shale increased to 0.5%, and the marine source rock began hydrocarbon generation in the Late Jurassic. The buried depth, paleo- temperature and R o increased to maximum in 145~143Ma, Early Cretaceous, which resulted in minor oil generation of the Toarcian oil shale in the Bilogco area and the first peak of hydrocarbon generation of Toarcian mud shale in the Amuco area. Buried depth of the Jurassic marine strata decreased since the Early Cretaceous due to uplift and erosion, and increased evidently due to crust depression and redbeds formation in the Late Cretaceous and Early Paleogene. The paleo- temperature and R o of Toarcian oil shale increased to maximum at ~66Ma, which formed peak of hydrocarbon generation in the Bilogco paleo- oil reservoir. Buried depth of the Toarcian mud shale reached to maximum at ~43Ma, which formed the second peak of hydrocarbon generation in the Amuco area.