In order to solve the problem of our country in the construction of agricultural information, such as a single mode of information services, guidance and applicability of the information is not enough and so on, research and design agricultural information service platform based on cross-platform Technology. The mobile terminal as the carrying platform and take advantage of its portability, the popularity and relatively low price, convenient on-site processing ability. The platform integrating agricultural information, agricultural policy, agricultural knowledge, agricultural pre-warning, characteristic agriculture, rich experience, experts inquiry in one, zero distance contact farmers and agricultural information, it has high practical value and broad application prospects.