Abstract: With the rapid development of infrared technology, the higher infrared data rate is required. Aiming at the high-speed requirement of a new infrared imaging system, a novel method for infrared image high-speed transmission was proposed, which was implemented with Peripheral Component Interconnect（PCI） Express and optical fiber. The system achieved an infrared image transmission speed of over 100 Mbyte/s. The infrared imaging experimental results show that the system meets the demand for high-speed infrared image acquisition.