Abstract: The advection upstream splitting method (AUSM) is used to discretize the 2D shallow water equations based on the finite volume method and unstructured triangular grids.The source terms and drying wetting moving boundary in the shallow water equations are specifically handled.Compared with the theoretical and classical cases for 2D dam break and Zhalong wet land,it shows that the results are in good agreement with the field data and the advantage of original scheme is also remained.The application of AUSM scheme is shown its stability and credibility.