The invention relates to a method for determining rock electricity parameter m and n values of a digitalized core, which comprises the following steps of: performing quick nuclear magnetic measurement and calculation on the selected core to obtain nuclear magnetic T2 spectrum and porosity core digitalized data volume; calculating a cementation index m and a saturation index n through a formula respectively; and substituting a logging calculation stratum porosity of an un-cored well field into the established function relations of the cementation index and the saturation index respectively to obtain a cementation index m value and a saturation index n value of the un-cored well field. The method can quickly solve the m and n values, can reach the experimental test effects of the laboratorial conventional standard flow experiments and calculation and acquisition, solves the problem that the rock electricity parameter m and n values cannot be acquired in short time in a laboratory, is convenient and quick to solve, can timely serve or meet the requirements of actual production, and has good application effect.