The splicing of multiple videos on the display can not only monitor and view from a large viewing angle and various angles, but also solve the problems of messy display of multiple viewing angles in a single camera video and the inability to display the whole view due to target occlusion. A display with multi-channel infrared video splicing based on field programmable gate array (FPGA) is designed. The design of the display uses JFM7K325T-900 FPGA as the processor, and is equipped with two SCB15H1G160AF-15HI 16-bit synchronous dynamic random-access memory (SDRAM) as the image cache module. It supports serial digital interface (SDI) and high-definition multimedia interface (HDMI), and provides three high-speed digital video interfaces called flat panel display links (FPD-LINK). The three infrared video interfaces process three infrared video images with a resolution of 1280×1024 into three images with a resolution of 640×720 through FPGA to fill the display with a resolution of 1920×720. The results show that the display can display infrared images of different scenes in real time and complete multi-channel infrared video splicing.