Abstract: Experimental and numerical simulations were used to study the dynamic process of droplet impact. In the paper, the influence of droplet radius and surface tension coefficient on the process of droplet outspread and rebound were discussed in detail. The results from numerical simulation are in good agreement with those from the experiments. The oscillation intensity decreases as the droplet radius increases, and it increases when the droplet velocity decreases. The oscillation magnitude and frequencies decrease considerably along with reduction of the surface tension coefficient. Also, there is a relationship between the droplet outspreading time and impact velocity as well as surface tension coefficient.