The present paper performed the evaluation of four dark-object subtraction(DOS) atmospheric correction methods based on 2012 Inner Mongolia experimental data. The authors analyzed the impacts of key parameters of four DOS methods when they were applied to ZY-3 CCD data. The results showed that (1) All four DOS methods have significant atmospheric correction effect at band 1, 2 and 3. But as for band 4, the atmospheric correction effect of DOS4 is the best while DOS2 is the worst; both DOS1 and DOS3 has no obvious atmospheric correction effect. (2) The relative error (RE) of DOS1 atmospheric correction method is larger than 10% at four bands; The atmospheric correction effect of DOS2 works the best at band 1(AE (absolute error)=0.001 9 and RE=4.32%) and the worst error appears at band 4(AE=0.046 4 and RE=19.12%); The RE of DOS3 is about 10% for all bands. (3) The AE of atmospheric correction results for DOS4 method is less than 0.02 and the RE is less than 10% for all bands.Therefore,the DOS4 method provides the best accuracy of atmospheric correction results for ZY-3 image.