Abstract: Structure and energetics of silver clusters, AgN(N=3141), have been studied bmolecular-dynamics simulation. A model many-body dual potential function has been used in our simulations. Stable structures of microclusters with sizesN=313 and the energetics of clusters generated from FCC crystal structure with sizesN=13141 have been determined by molecular-dynamics simulation. It has been found that three dimemsinal structure of spherical cluster appears forN=13 141. The caculation of average binding energy of silver clusters has been performed and the relationship plot between the binding energy and the cluster sizes also has been given. As the cluster size increases the calculated binding energy approachs the bulk cohesive energy.