Adsorption of divalent metal ions, including Cu2+, Pb2+, Zn2+, Cd2+ and Ni2+,onto quartz was measured as a function of metal ion concentration at 30℃ under conditions of pH = 6.5 and I = 0.1mol / L. The experimental measurements can be described very well by adsorption isotherm equations of Freudlich. The correlation coefficient of adsorption isotherm lines (r) is 0.96. Moreover, the experimental data were interpreted on the basis of surface complexation model. It shows that the monodentate-coordinted metal ion surface complexes species (SOM+) are predominant over the bidentate-coordinted metal ion surface complexes species ((SO)2M). The later formed in little only by ions of Cu2+, Zn2+, and Ni2 +. The results simulated simplifiedly by surface complexion model are as follows : The apparent surface complexation constants lgKM = 2.2-3.3, and KCd≥KZn KNi≥KCu; lgβM=5.9- 6.8, and βNi βZn βCu. The ability on reactivity of ions to quartz folllows the sequenced:Cd Pb Zn Ni Cu. The Born solvation Gibbs free energy is the major factor controlling the surface complexation of metal ions, therefore, the apparent surface complexation constants depend on the Born solvation coefficient.