Abstract:This article construct evaluation index system from three dimensions of information content, information technology, information use. Based on the survey data of 2771 farmers experience evaluation,using a combination method of the factor analysis method ,clustering analysis and entropy method,having an empirical study on farmers'' evaluation about the Rural agricultural information comprehensive service platform from 14 cities(states) in Hunan Province. The results show that different city(state) farmers’ evaluation to the Rural agricultural information comprehensive service platform showed a certain difference,the information content dimensions has the biggest difference,the information use index is the second,and the difference of the information technology is the least. The rural agricultural information service platform construction in the future should be aimed at the actual demand of farmers, through the integration and development information resources to enhance the quality of service, using advanced and applicable technologies to innovate service pattern ,training farmers to use information ability to stimulate service demand.