This paper reports investigations of the influence or sonic combustion parameters on the formation/destruction of N2O from coal combustion. The gas phase formation of N2O as theoretically analysed, and the results were compared with the experimental data obtained. Calculations were performed for adiabatic constant volume combustion on the basis of 108 elementary reactions involving 30 different chemical species. The comparisons with experimental data were made within a temperature range from 800-1100degreesC, taking into account the effect of various operating parameters, viz. temperature, devolatilisation process. concentration of CH4, HCN/NH3 ratio etc. The experimental results were satisfactorily explained by the theoretical modelling. The results show that N2O formation/destruction is very sensitive to the combustion temperature. as well as to the devolatilisation scheme of the coal. Besides, the concentration of CH4 and the presence of NH3 and HCN also have significant roles in the N2O formation and destruction mechanisms. The results show that the presence of NH3 helps in the conversion of N2O to NO, whereas HCN acts as the activating source of N2O formation. This trend is very much temperature dependent.