Abstract: Baced on the paper1, this paper develops the method for calculating eccentrically loaded reinforced concrete columus with uniaxial bending to calculete those with biaxial bending. Therefore it could avoid the lack of immediacy in calculating eclcentrically loaded columus with biaxial bending and the discountinuity between the calculation of columus with unaxial and that of biaxial bending, which would be met when current code TJ₁₀—74 methods are used. Some examples are given and checked by Bresler's classical method,the results show good agreement.Here in the method, the 0.618 two-factor optimization is adopted and a BASIC program is made which can be used with a microcomputer.