The pile foundation+low and wide bearing platform is an unconventional structure,which has both the retaining structure of sheet pile and the pile foundation characteristic of the piled wharf,for which,the current code has no stipulations on the calculation standard,thus it is difficult to implement the structural design of this kind of structure.Based on a practical engineering,we discuss the design conditions and structural design contents for calculating the mud surface line,etc.Based on the elastic foundation beam method,we adopt the finite element software ANSYS to calculate the structure and analyze the stress characteristics of each component.It is concluded that the unloading effect of the low pile cap is better than that of the high pile cap and the internal force of the front sheet pile is directly related to the width and elevation of the cap,but not affected by the rigidity of the cap,the structure and arrangement of the pile foundation.