In the present study, Phoenix Dactylifera L. extract is analyzed for its potential to prevent corrosion of aluminum under 1N HCl acidic media by weight loss measurement. Phoenix Dactylifera L. acetonitrile extract comprised of variety of phytochemicals like proteins, amino acids, carbohydrates, phenols, flavanoids, Phlobatannins, quinines, resins, steroids and triterpenoid. These phytochemicals are adsorbed on the surface of metals plates by means of hetero atom present in them. The adsorption behavior of these phytochemicals on the surface of Al plates is in accordance with langmuir adsorption isotherm. The value of Gibb’s free energy of adsorption was found to be -7.37 KJ mol-1 indicating spontaneous physisorption of extract molecules on the surface of Al plates.