Design and Realization of Main Grain Comparative Advantage Analysis System for China County

Since no comparative advantage analysis system developed for agricultural products in China counties , this paper focuses on the county's Agricultural Economic Basic Material Database to discuss on how to use comparative advantage theory and Aggregated Advantage Coefficient to design regional main grain comparative advantage analysis system. For future extension, author applies database technology and Java language , which not only ensure system and data safety but also make the system to run on internet and any computer with Java Virtual Machine.