Abstract: The establishment of agricultural satellite information network will enable China's agricultural information service to meet the demand of agricultural development and truly realize our goal of building up agricultural information WAN. The utilization of Very Small Aperture Terminal(VSAT) satellite communication system could help us to set up an agricultural satellite information network with higher coverage and regardless of factors of regional difference. This will certainly contribute to controlling and managing agricultural production, speeding up information processing, enhancing the level of application, accelerating information flow and boosting the overall level of network use.