Based on the CCSM3 (Community Climate System Model version 3) model of the US National Center for Atmospheric Research,this paper studies the interdecadal response characteristics of climate in China under different mean intensities of Atlantic Meridional Overturning Circulation (AMOC) in the freshwater disturbance tests.Results show that the changes of surface temperature and precipitation intensity in China are closely related to the changes of AMOC intensity on interdecadal scale,but the response characteristics of China climate on interdecadal scale are different under different mean intensities.Under the high mean intensity,the surface temperature in China increases,the precipitation in northern China increases,and the precipitation in southern China decreases,whereas under the low mean intensity,the opposite is true.Under different mean intensities,the spatial distributions of the first EOF eigenvectors of annual mean surface temperature and precipitation in China are significantly different:Under the high mean intensity,the surface temperature presents a uniform distribution pattern in the whole region of China,and the precipitation presents a "-+-" type rain belt distribution from north to south;under the low mean intensity,the surface temperature shows a dipole distribution pattern of north-south inversion in China,and the precipitation shows a "-+" type rain belt distribution from north to south.Compared with the low mean intensity,the interdecadal variation scales of the time coefficients of the first EOF modes are longer under the high mean intensity.