The effect of oxidizer,mass burning rate and combustion temperature on the radiant intensity (RI) of infrared radiation pyrotechnics were experimentally inveztigated in the specific wavelength of 3～5μm and 8～14μm regions. The results show that PTFE (Polytetrafluoroethylene) is an excellent oxidizer having a high RI,the increase of RI is directly proportional to mass burning rate, the increase rate of RI in the range of 3～5μm is higher than those of 8～14μm with the rise of temperature.