Abstract: The stress and strain of a miter gate of ship lock are analysed using the method of Ansys. In the case of a miter gate, the results of the method of Hydraulic and Hydroelectric Engineering Specification for Design of Steel Gate DL/T5013-95 (Here after called Specification) and Ansys are compared. It has shown that there are some differences between the results from the method of Ansys and from the method of Specification. The reason is analysed,and the disadvantages of the method of Specification are explained, then the miter gate’s dynamic characteristic is analysed as well.