Two-band emission method for measuring temperature distribution using CO 2 or H 2 O as the emission medium was developed. In the calibration test using McKenna hydrogen flat flame burner, the developed method had similar quantitativity compared with the other measurement methods, CARS and SiC radiant method. When we applied the developed two-band emission method to high enthalpy supersonic wind tunnel experiment, we could capture the behavior of shockwaves and expansion fans in the supersonic flow and the reconstructed temperature distribution was reasonably quantitative.