This paper presents the design for showing circuits of the IRFPA of the IR thermalimaging on sync generator for TV applications and video processing systems and DAC8308. It firstly studies the working principle and requirement of the thermalimaging system, then it gives the hardware structure of the system in details, the last part introduces the test of the system.The results of the experiment have indicated,the showing circuit can successfully achieve converting the datum and signals corrected gay level images to analog video signals and the time series of the system to the TV′s.