Infrared focal plane array is the infrared sensor which can convert detected radiation signals to electrical signals,and finally form the thermal image.It is the core device of infrared staring imager.This paper is about the 256×256 InSb device,through the programming of the LabVIEW software we can implement the real-time imaging of the infrared focal plane arrays（IRFPA）.We also analyze the infrared image characteristics briefly.The results show that this system can collect infrared images signal correctly and process the real-time imaging.