With the development of infrared technology, infrared sensors are widely used in various fields such as monitoring, security checking and target tracking. In some special occasions, for example unmanned aerial vehicle (UAV) acquiring target information, the whole process is needed to be record to prepare for the subsequent analysis, treatment and comparison with other samples, so as to get more information. According to above requirements, the infrared image storage and a playback system based on FPGA+DSP architecture are designed. And bad block management for memory chip is performed to ensure the reliability of the memory. Image data is sent to the host computer through Gigabit Ethernet to complete data offload and playback.