An ongoing program in our laboratory seeks to elucidate the effect of polymers on aluminum oxide. The project includes the use of molecular dynamics (MD) techniques to carry out the real time simulations of the interactions of polyolefin、polyacrylate and polyoxide adhesive oligomers with idealized alumina surface. The simulations illustrated that the adsorption energy depended on the geometric structures of monomers. The energy of adsorption decreases for polymer chain with alkyl side groups like -cooH or -cooR whereas it increases for polymer chain with functional groups. We also found that the polymer chains with more -CH_2- or functional groups will increase the energy of adsorption substautially.