A numerical wave flume which is developed by directly solving Navier-Stokes equation and κ-ε equation with VOF technique and SMAC method is established to simulate the interaction of wave and coastal structures,especially to study the course of wave propagation on sloping dike.At first,the simulation accuracy of wave flume is verified by analyzing the non-linear wave propagation over a horizontal bed,based on which,the whole course of regular wave propagation on sloping dike is simulated,including the wave run-up and wave overtopping.Then the temporal variation of water elevation at measuring points on the slope and the overtopping rate are validated by experimental data.