In the river and coastal engineering field, a lot of researchers have been dealt with wave run-up. Estimation of the height of wave run-up is very important for planning of disaster prevention, development of structures on the waterfront, and management from coastal zones to riverside. The authors simulate the wave run-up of a solitary wave under the conditions of breaking wave and nonbreaking wave using particle method. The accuracy validation of these results was done through comparison with the result from Synolakis's experiment. This study shows that the particle method is a useful method in estimating the relation between height of wave run-up and wave height.