The paper describes the influence ofpressure and temperature on some parameters of the burning principles of pyrotechnic compositions, which contain magnesium and sodium nitrate with alkaline and transitional metal fluorides. The authors determine temperature coefficients for pyrotechnic compositions with various fluorides additions. They also elaborate equations for the parametrical dependencies of burning rate on pressure and temperature. After analyzing the obtained results, it became possible to define the scope of influence of the initial parameters on burning rate of composition.