In response to the current lack of internal force calculation for water conservancy sheet pile revetment, the calculation principle and method of sheet pile are discussed and analyzed. The calculation formulas for the internal force and displacement of sheet pile retaining plate and anchor pile are derived. And a river revetment in Nantong City of Jiangsu as Province is checked. The result shows that the derived formulas have the clear mechanical significance, are relatively simple, and are easy for designers to calculate, which can provide reference for the design of similar projects.