Considering the water diversion project of high grade engineering, large water flow rate and high seismic fortification requirements, there are engineering technical problems of aqueduct structure. According to the characteristics of water diversion project with high pier, big load，large aqueduct structure section size, and complicated factors of settlement and deformation, the aqueduct support type, trough section form, aqueduct pier body are compared and selected, and the results show that the simple structure can reduce the difficulty of construction and uneven settlement on the stress of the tank structure, and has the advantage of simplifying the stress condition of the structure. The hollow gravity pier has the advantages of saving material, making full use of material strength, great stiffness, light pier body, high seismic capacity and impact resistance, which can be a reference to similar project design.