The "Internet Agriculture" model not only provides sales channels for rural areas, but has also penetrated into the entire agricultural industry chain. From production to processing to sales, the Internet can "escort" it. The penetration of the Internet into traditional agriculture mainly manifests itself in three models: smart agriculture that applies Internet technology to the agricultural production process, agricultural e-commerce that applies Internet e-commerce to the sale of agricultural products, and the agricultural Internet ecosystem that integrates the Internet into the entire industrial chain. Keywords in this book: policy dividends, agricultural ecosystem, agricultural position war, smart agriculture, e-commerce model, industrial chain model, financing model, Internet of Things, big data, precision agriculture, operation system, O2O, etc. Business cases in this book: Lenovo, LeTV, SF Express, Cuncunle, Dabeinong, New Hope, Kingenta, JD. Com, Local Life, Farmeron, Solum, etc.