Attrition characteristics of domestic low grade anthracite coal have been studied in a bench-scale fluid-ized bed combustor. As operating variables, excess gas velocity(U-U_mf), bed temperature, and excess air ratio were ap-plied. Attrition characteristics such as carbon attrition rate, ratio of elutriated attrited carbon to feed carbon, as well as analysis of compositions and size distributions of coals and ashes were investigated. The experimental results show that the carbon elutriation due to attrition is in the range of 5-15% of the feed carbon, increases with the excess gas velocity, and decreases with increasing bed temperature and excess air ratio. Also, the carbon attrition rate of domestic low grade anthracite coal is shown to be greater than that of other type of coals because of the higher in-bed carbon load resulting from their lower reactivity. The following correlation has been suggested for the ratio of elutriated attrited carbon to feed carbon. Y_ea=38.05+13.20(U-U_mf)00.04(T_b)-6.79(X_e)