Infrared thermography technology has become one of the most active hotspots for its advantages of fast measurement,non-contact test,large measuring range,high accuracy,easiness to realize automation and real-time observation,etc. To master the research situation of the domestic infrared thermography technology,its research and development are summarized and analyzed. The study of infrared thermography technology is divided into three parts,including fundamental research,product development and application research. The development of infrared thermography,infrared image processing,the factors of affecting accuracy and the infrared camera′s development at home are introduced. Its applications in the field of military,medical,electricity,agriculture and forestry have broad prospects.