This paper introduces the stress characteristics and deformation of a wharf’s abutment pier on high-level piles in Jiangsu province during the trial operation of two 800 t boom cranes,and verifies it by numerical simulation.The result indicates that the real-measured data of the stress and pier’s overall displacement of the pier’s top & bottom plates and pile foundation can reflect the real state of stress under the load of 8.2 kN and amplitude of 45 m stain of top or bottom of abutment and pile foundation,and they coincides with each other basically.It provides a significant basis for the 3D design method of high-pile pier.