Based on the content of Chapter 7 from the Sixth Assessment Report (AR6) contributed by the Intergovernmental Panel on Climate Change (IPCC) Working Group I (WGI),this paper presents the latest definition of effective radiative forcing (ERF) and its calculation method in AR6,and interprets the best estimations of ERF for each forcing agents from 1750 to 2019.According to the latest estimations in AR6,over the industrial era (1750—2019),the total anthropogenic ERF was 2.72(1.96 to 3.48) W·m^-2.This estimate has increased by 0.43 W·m^-2 compared to AR5 estimates for 1750—2011.Atmospheric concentration increases of greenhouse gases (GHGs) since 2011,and upwards revisions of their radiative efficiencies are the important contributors for the growth of total anthropogenic ERF.Changes in GHGs concentration contributed an ERF of 3.84(3.46 to 4.22) W·m^-2,of which Carbon dioxide continues to contribute the largest part (56％±16％).Aerosols have in total contributed an ERF of -1.1 (-1.7 to -0.4) W·m^-2 over 1750—2019.Aerosol-cloud interactions contributed approximately 75％—80％ of this ERF with the remainder due to aerosol-radiation interactions.There has been an increase in the estimated magnitude but a reduction in the uncertainty of the total aerosol ERF relative to AR5.However,there remains a considerable uncertainty in ERFaci as some of important adjustments are not considered.