Climate feedback reflects the adaptation process of the climate system to external interference, and affects the prediction of future climate change to a great extent.This paper summarizes the content on climate feedback in the Sixth Assessment Report (AR6) of the Intergovernmental Panel on Climate Change (IPCC).In AR6, the understanding of cloud feedback has been improved greatly compared with that in AR5, especiallythe feedback of low clouds over the Subtropical Ocean.The net cloud feedback parameter is assessed to be positive with high confidence in AR6, which plays an amplification effect on climate change..However, the uncertainty range of cloud feedback is still the largest in all feedback mechanisms.Apart from Planck feedback, all the other feedbacks (water vapor, temperature lapse rate, land surface albedo, cloud, bio-geophysical and non-CO₂ biogeochemical feedback) are positive or near zero, generally amplifying climate change.The estimate of general climate feedback parameter in AR6 is -1.16 W·m^-2·℃^-1, with a 5%—95% confidenceinterval of [-1.81, -0.51] W·m^-2·℃^-1.With global warming, the climate feedback parameters are likely to be closer to the positive value.