The turning kiln group is an important equipment in metallurgic industry. Its temperature state that is reflected by kiln's skin dir ectly influences the production efficiency and the product's quality. In this pa per, an infrared imaging system (IRIS) that is used in real time group temperatu re measurement for turning kiln's skin is described. First of all, the principle of the system is presented, then the system design and the temperature standard ization are detail introduced. Some results of the system application are also d escribed. At last the practical function of the infrared imaging system is discussed.