Abstract: A lithium battery power display method and corresponding system, the method includes: during charging process of lithium battery, periodically calculating SOC value charged in this charging through a current integration method (S10); obtaining a sum of the SOC value displayed before charging and the SOC value charged, determining whether it is in a predetermined charging platform area (S11); when determination result is in the predetermined charging platform area and it is determined the correction trigger condition is met, a correction coefficient is calculated according to pre-calibrated formula, the SOC value to be displayed is obtained by correcting the SOC value charged with the correction coefficient, the correction coefficient is positive number less than 1 (S12); displaying the SOC value to be displayed (S13). Solve virtual electricity caused by large SOC error in non-full charge and discharge state of lithium batteries, improve experience of lithium battery electric vehicles.