A hybrid potential, which is the combination of the Molters with a semiempirical tight-binding potential has been developed in this paper. The collision dynamics between gold clusters and gold thin films has been simulated by means of molecular dynamics simulations. The hybrid potential is applied in the simulation. The clusters bombard on An(100) surfaces at the energy of 3250 eV per cluster. Radiation damages of the gold thin films at atomic scale have been studied. The changes of crystalline structures and the craters on the surface have been predicted. The collective nature of the interactions between clusters and thin films has been discussed.