Abstract：The research,using large tonnage vibroseis excitation and multiple coverage seismic reflection techniques, complets the 14 km middle-deep seismic reflection profile across the Taizhou fault. In this paper, we combine geological data from the study area and the characteristics of the obtained reflection wave group, establish a fine stratigraphic frame along the quaternary to the Paleozoic, and study the structural morphology, cutting depth and structural combination of the Taizhou fault and its two sides. The results show that there are many reflective interfaces with strong reflection energy in the upper crust of the area. Two important structural planes of the upper crust structure in this area are the ancient hidden hill surface and the top interface of crystalline basement TG. The Taizhou fault is generally shown as a fault tectonic zone consisting of two faults. Its upper part disconnects the bottom of the Quaternary, and lower part disconnects the Neogene, Paleogene and other sedimentary layers and crystalline basement. It has an important control effect on the formation of the uplift and depression in this area.