Abstract: Informatization development of agriculture and country was laggard in Yunnan, limited by economic, infrastructure and farmer’s scientific and technological ability. Taking Yunnan as example, this study developed two low cost informatization modes for agriculture and country: with government as dominant and with enterprise as dominant. The first mode made county as center, build county service platform and service system of agricultural technology information. In this mode, some involved project was integrated and constructed together, and one information service port was build with multiple use. The information was send to family and farmer with network, short message, or HDD player. The other mode made enterprise as center, build enterprise cluster servers and information service system with the need of enterprise in industrialization and standardization. In the mode, information was send to enterprise production base and alliance farmers using wireless communication technique and wireless coverage technology. Combination these two modes would solve the “last one kilometer” difficult in west frontier ethnic area in China.