Thermal analyses were conducted in a thermogravimetric analyzer by isothermal technique in order to characterize the Korean anthracites-nitrogen oxides reaction. The tested coal sample was Dogae anthracites and compared with SP-1 graphite. Carbon-NO and carbon-N$_2$O reactions were carried out with respect to isothermal reaction temperatures (550$^{circ}C$-900$^{circ}C$) and reactant gas partial pressures (5 kPa∼20 kPa). In NO reaction, measured reaction orders of NO concentration and activation energy were 0.45∼0.96 and 39∼l12 kJ/mol, respectively. In N$_2$O reaction, measured reaction orders of N$_2$O concentration and activation energy were 0.62∼0.87 and 190∼215.3 kJ/mol, respectively. Compared the Korean anthracites-nitrogen oxides reaction with the combustion reaction, the reaction rate in the oxidation below 700$^{circ}C$ decreases in the order O$_2$>NO>N$_2$O. But above 700$^{circ}C$, the reaction rate of N$_2$O is faster than that of NO.