NO emission is a significant source of pollutant from coal combustion. With the establishment of industry flue gas emission standards, removal of NO has been attracting attention and research globally. In this paper, the denitration process through the use of a Fe-II complex solvent has been studied based on the approach of the wet desulfurization method. The kinetic parameters of the chemical reaction for NO absorption by Fe-II complex have also been deduced to provide theoretical consideration for the feasibility of this process. It is demonstrated that Fe(II)EDTA adsorbs NO efficiently under the conditions investigated, achieving the maximum NO reduction efficiency at a neutral pH value at 50 degrees C. The inlet O-2 content in flue gas is a crucial factor affecting the performance of Fe-II complex, the increment in which leads to the oxidation of Fe-II into Fe-III and hence reduces the absorption capability of the sorbent. The coexistence of SO2 and NO in flue gas decreases the NO removal efficiency by being preferentially adsorbed by the sorbent. However, with the increasing content of SO2 in flue gas, the solvent's capability in absorbing NO is recovered to its original level.