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Infrared image has the characteristics of low resolution and high frame rate. Target infrared features analysis and image processing algorithms need to lossless image data recording. To achieve these requirements, a design approach for the high-speed digital image transmission and recording system is presented. The approach adopts an overall structure of HOTLinkⅡ+ FPGA + PCI. Data is transferred from the infrared image device to the CYP15G0101 chip of the recording device through coaxial cable and a reliable point-to-point remote transmission is achieved. FPGA and PCI interface chip are used to realize data receiving and buffering. Software achieves facilities such as initialization, control and data transmission of the PCI chip by calling SDK API functions. Image data is continuously written into the hard disk, according to the predetermined format. Finally, functions such as data recording, playback and analysis are realized. The approach has been successfully applied to an infrared image recording device. After a long time test, recording time, omission rate and playback functions all meet the design requirements.