Abstract:Thermoelastic Infrared Image Safe Testing System is a key item of the national science instrument, and passed technique identify in Dec. 29, 2002. The experts uninfected that is an original creativity technique and international precedence level. The research contents, research method and achieved results have been introduced in this paper. The discovery of Heating Scar and it detected method were provided with important industrial value and have been attracted in Nondestructive Testing region.