In recent years,uncooled infrared detecting technology has obtained a rapid development in both military and civilization fields. As uncooled infrared detector has the characteristics of low price and small size,it plays an important role in the development of infrared detecting system. The development status about domestic and foreign uncooled infrared detector was summarized,and the feature and difference of two main types of uncooled infrared detector (VOx and α-Si) were compared and analyzed. Finally development trend of this technology is pointed out.