Abstract: We derived a method for the calculation of complex chemical equilibria by using the independent components. The number of unknowns and the number of independent equations for this method are obviously less than those used in the method for the minimization of free energy, the method for the mass action equations and the method based on calculating extents of reactions. By this simple method a pocket programmable calculator e. g. TI-59 is sufficient to cal-culate a complex chemical equilibrium system containing three elements which form 10 chemical components but for the same system a computer must be used by other methods. The basic principle and concrete procedure of the method are presented in this paper. The superiority of the method to others according to theoretical con-sideration and computing practice is also discussed.