Abstract: Information is the object of information science research and information service is the core of the development of agricultural informatization. With the development of information science and agricultural informatization, there are more and more intersection between the two, while little research between the two. In order to research the influence of information science to modern agricultural informatization, the article discussed the application of six principles of information science in agriculture informationization, which included discrete distribution principle, ordering principle, relevance principle, usability principle, small world theory and logarithmic perspective principle. The article tried to meet the growing demand of the information in the process of agricultural informatization, through better organization of agricultural information in the view of information science.