In order to counter infrared dual color (1～3, 3～5 μm) guide system that is widely applied nowdays, one type of new infrared dual color decoy wihich can simulate infrared dual waveband radiation characteristics was designed and prepared in this paper. Image IR8325 infrared thermal imaging system was employed to investigate the flame temperature variation and temperture distribution of decoys. In order to analyze the influencing factor of radiation intensity and dual color ratio of the decoy, SR5000 spectrum radiometer and remote sensing interferometer spectrometer Tensor37 were adopted to investigate static infrared radiation characteristics of dual color decoys and gained its time-domain and frequency-domain characteristic. For the sake of studying the change laws of radiation intensity and dual color ratio of dual decoy which is under high speed flight station, the combustion wind tunnel was employed to investigate the dynamic radiation characteristic and it indicated the different attenuation mechanism of the dual color decoy between the traditional decoys. The test results indicates that the flame temperatue of the dual color infrared decoy temperature is between 850～1 100 ℃ and it is approximately similar to that of the plane target. The color ratio of infrared radiant intensity is from 1 to 3(1