Abstract: The construction of steel sheet pile cofferdam is dangerous under water. In order to ensure the safety of construction of steel sheet pile cofferdam, based on the case of the steel sheet pile cofferdam of No. R38 pier of Haihe River Bridge in Tianjin, a three-dimensional model for steel sheet pile cofferdam is established by use of the general finite element software ANSYS. Meanwhile, the construction process is analyzed in consideration of four load cases. The results show that the structural design of the steel sheet pile cofferdam of No. R38 pier meets the strength and deformation requirements, and it can be constructed safely according to the design. This work may provide reference for construction of the similar cofferdam.