Abstract: An intelligent engine room IoT system is designed based on SOPC technology with the help of Niche Stack TCP/IP stack, μC/OS-Ⅱ, zip file system, ZigBee technology and multi-processor technology.In the system, three Nios II processors are integrated in a FPGA development board, which aim to create Web server, to monitor and to play audio, as well as to transmit the real-time data of video, audio and picture.There are several schemes to protect network security.It is proved that the system is stable, reliable, and flexible, and is convenient for upgrading and maintenance.