Abstract: Structure and design schemes of hardware and software of a wireless audio and video terminal of mine were introduced. Transmitting terminal is designed by use of S3C6410 processor as well as receiving terminal, which is low in cost. Software of the terminal is based on Linux embedded operation system with good real-time performance and stability. Audio and video data is transmitted through wireless WiFi network. The test result shows that CPU using ratio is less than 5% when the terminal transmits data normally; transmitting distance is about 100 m indoor and 300 m outdoors.